Question

x(7x-2)+(x+3)^2 will medal

Answer 1

*Distribute the 'x' through the parenthesis x(7x - 2)

*Expand that binomial (x + 3)^2

Answer 2

ok (7x^2-2x)+(x^2+3x+3x+9)

Answer 3

Right...lets just simplify that second one a bit though....(3x + 3x = 6x right) so we have

\[\large 8x^2 - 2x + x^2 + 6x + 9\]

Now...combine like terms...

like terms mean they must have the same variable...and degree(exponent) to combine

for example...x^2 can only be combined with other x^2 numbers...

Answer 4

Oops...I put 8x^2...it was the 7x^2...sorry about that

Answer 5

ok

Answer 6

8x^2+4x+9

Answer 7

Perfect!

Answer 8

thanks :3

Answer 9

Anytime :)