Question

Nakim simplified 3(sqrt)2x + x(sqrt)8x - 5(sqrt)18x and got -10(sqrt)2x
explain where she went wrong and show your work?

Answer 1

\[3\sqrt{2x} + x \sqrt{8x} - 5\sqrt{18x} -10\sqrt{2x} = 3\sqrt{2x} - x \times 2\sqrt{2x} - 10 \times 3\sqrt{2x}\]

each term has been expressed in terms of

\[\sqrt{2x}\]

so collect like terms

\[(x -12)\sqrt{2x}\]

Answer 2

oops

\[(2x - 12)\sqrt{2x}\]

Answer 3

3sqrt2x +xsqrt8x -5sqrt18x =3sqrt2x +2xsqrt2x -15sqrt2x =2xsqrt2x -12sqrt2x =
=(2x-12)sqrt2x

- so is wrong when was subtracted 2xsqrt2x from 12sqrt2x what not is possible

Answer 4

thank you

Answer 5

yw

good luck

bye