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Questions

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Time

Score

Operations on functions addition

Add $v(x)=5x+2$ and $w(x)=3x-2$ .

$x^2+2x+3$

$8x-1$

$8x$

Add $f(x)=2x+3$ and $g(x)=-x^2$ .

$x^2+2x+3$

$-x2+2x+3$

$2x^3+3x^2$

Add $v(x)=ax^2+bx$ and $w(x)=bx-2$ .

$ax^2+4bx-2$

$ax^2+bx-1$

$ax^2+2bx-2$

Add $v(x)=5x+2$ and $w(x)=3x^2-2$ .

$3x^2+5x$

$8x-1$

$3x^2+1$

Add $f(x)=5x$ and $g(x)=-x^2+1$ .

$x^2+2x+3$

$-x^2+5x+1$

$2x^3+3x^2$

Add $f(x)=2x^3$ and $g(x)=3x^2$ .

$x^2+2x+3$

$-x^2+2x+3$

$2x^3+3x^2$

Add $v(x)=5x+1$ and $w(x)=3x-2$ .

$x^2+2x+3$

$8x-1$

$8x+1$

Add $v(x)=5x^2+x$ and $w(x)=3x-2$ .

$5x^2+4x-2$

$5x^2+8x-1$

$5x^2+8x+1$

Add $v(x)=5x+a$ and $w(x)=3x-b$ .

$x^2+2x+3$

$8x-ab$

$8x+a-b$

Add $f(x)=\sin\sin x$ and $g(x)=3x^2$ .

$\sin\sin x+2x+3$

$-x^2+2x+3$

$\sin\sin x+3x^2$

Questions

Time

Score

Operations on functions addition

Add ﻿v(x)=5x+2v(x)=5x+2v(x)=5x+2﻿ and ﻿w(x)=3x−2w(x)=3x-2w(x)=3x−2﻿.

﻿x2+2x+3x^2+2x+3x2+2x+3﻿

﻿8x−18x-18x−1﻿

﻿8x8x8x﻿

Add ﻿f(x)=2x+3f(x)=2x+3f(x)=2x+3﻿ and ﻿g(x)=−x2g(x)=-x^2g(x)=−x2﻿.

﻿x2+2x+3x^2+2x+3x2+2x+3﻿

﻿−x2+2x+3-x2+2x+3−x2+2x+3﻿

﻿2x3+3x22x^3+3x^22x3+3x2﻿

Add ﻿v(x)=ax2+bxv(x)=ax^2+bxv(x)=ax2+bx﻿ and ﻿w(x)=bx−2w(x)=bx-2w(x)=bx−2﻿.

﻿ax2+4bx−2ax^2+4bx-2ax2+4bx−2﻿

﻿ax2+bx−1ax^2+bx-1ax2+bx−1﻿

﻿ax2+2bx−2ax^2+2bx-2ax2+2bx−2﻿

Add ﻿v(x)=5x+2v(x)=5x+2v(x)=5x+2﻿ and ﻿w(x)=3x2−2w(x)=3x^2-2w(x)=3x2−2﻿.

﻿3x2+5x3x^2+5x3x2+5x﻿

﻿8x−18x-18x−1﻿

﻿3x2+13x^2+13x2+1﻿

Add ﻿f(x)=5xf(x)=5xf(x)=5x﻿ and ﻿g(x)=−x2+1g(x)=-x^2+1g(x)=−x2+1﻿.

﻿x2+2x+3x^2+2x+3x2+2x+3﻿

﻿−x2+5x+1-x^2+5x+1−x2+5x+1﻿

﻿2x3+3x22x^3+3x^22x3+3x2﻿

Add ﻿f(x)=2x3f(x)=2x^3f(x)=2x3﻿ and ﻿g(x)=3x2g(x)=3x^2g(x)=3x2﻿.

﻿x2+2x+3x^2+2x+3x2+2x+3﻿

﻿−x2+2x+3-x^2+2x+3−x2+2x+3﻿

﻿2x3+3x22x^3+3x^22x3+3x2﻿

Add ﻿v(x)=5x+1v(x)=5x+1v(x)=5x+1﻿ and ﻿w(x)=3x−2w(x)=3x-2w(x)=3x−2﻿.

﻿x2+2x+3x^2+2x+3x2+2x+3﻿

﻿8x−18x-18x−1﻿

﻿8x+18x+18x+1﻿

Add ﻿v(x)=5x2+xv(x)=5x^2+xv(x)=5x2+x﻿ and ﻿w(x)=3x−2w(x)=3x-2w(x)=3x−2﻿.

﻿5x2+4x−25x^2+4x-25x2+4x−2﻿

﻿5x2+8x−15x^2+8x-15x2+8x−1﻿

﻿5x2+8x+15x^2+8x+15x2+8x+1﻿

Add ﻿v(x)=5x+av(x)=5x+av(x)=5x+a﻿ and ﻿w(x)=3x−bw(x)=3x-bw(x)=3x−b﻿.

﻿x2+2x+3x^2+2x+3x2+2x+3﻿

﻿8x−ab8x-ab8x−ab﻿

﻿8x+a−b8x+a-b8x+a−b﻿

Add ﻿f(x)=sin⁡sin⁡xf(x)=\sin\sin xf(x)=sinsinx﻿ and ﻿g(x)=3x2g(x)=3x^2g(x)=3x2﻿.

﻿sin⁡sin⁡x+2x+3\sin\sin x+2x+3sinsinx+2x+3﻿

﻿−x2+2x+3-x^2+2x+3−x2+2x+3﻿

﻿sin⁡sin⁡x+3x2\sin\sin x+3x^2sinsinx+3x2﻿

Incorrect

Great!

Add $v(x)=5x+2$ and $w(x)=3x-2$ .

$x^2+2x+3$

$8x-1$

$8x$

Add $f(x)=2x+3$ and $g(x)=-x^2$ .

$x^2+2x+3$

$-x2+2x+3$

$2x^3+3x^2$

Add $v(x)=ax^2+bx$ and $w(x)=bx-2$ .

$ax^2+4bx-2$

$ax^2+bx-1$

$ax^2+2bx-2$

Add $v(x)=5x+2$ and $w(x)=3x^2-2$ .

$3x^2+5x$

$8x-1$

$3x^2+1$

Add $f(x)=5x$ and $g(x)=-x^2+1$ .

$x^2+2x+3$

$-x^2+5x+1$

$2x^3+3x^2$

Add $f(x)=2x^3$ and $g(x)=3x^2$ .

$x^2+2x+3$

$-x^2+2x+3$

$2x^3+3x^2$

Add $v(x)=5x+1$ and $w(x)=3x-2$ .

$x^2+2x+3$

$8x-1$

$8x+1$

Add $v(x)=5x^2+x$ and $w(x)=3x-2$ .

$5x^2+4x-2$

$5x^2+8x-1$

$5x^2+8x+1$

Add $v(x)=5x+a$ and $w(x)=3x-b$ .

$x^2+2x+3$

$8x-ab$

$8x+a-b$

Add $f(x)=\sin\sin x$ and $g(x)=3x^2$ .

$\sin\sin x+2x+3$

$-x^2+2x+3$

$\sin\sin x+3x^2$