Question

Select the product of (-4x7y)(x3y4). confused how to do these

Answer 1

\[(-4x^7y)(x^3y^4)\]
Multiply the terms...
remember the rule for multiplying exponents:
\[\large x^n * x^m = x^{n+m}\]

Answer 2

\[-4x^7 * x^3 * y*y^4 = ?\]

Answer 3

-4x^7 *x^3 * y^5? derp

Answer 4

yes, keep going..

Answer 5

hmm is it, -4x^10y^5 ??

Answer 6

yeah

Answer 7

oh haha thanks!

Answer 8

hmm so how about this one? Select the product of (9x + 6)(9x - 6).

Answer 9

multiply them using the FOIL method.

Answer 10

i just learned about the FOIL jutsu, can u explain to me how to do it :/

Answer 11

or you could remember the identity:
(x+a)(x-a) = x^2 - a^2

Answer 12

(9x+6)(9x-6)
= 81x^2 - 36

Answer 13

oh okay, the exponent always throws me off

Answer 14

but what do you do when it gets more complicated like this Select the product of (6x + 9)(x2 - 4x + 4).

Answer 15

i lose count of all the crap in there

Answer 16

all you do is multiply each term to the terms in the parentheses..
(6x+9)(x^2 -4x +4)
=
6x*x^2 + 6x*(-4x) + 6x*4 + 9*x^2 + 9*(-4x) + 9*4 = .....

Answer 17

6x^3-15^2-12x+36

Answer 18

no.

Answer 19

fudge

Answer 20

is this some sort of genjutsu?

Answer 21

6x*x^2 + 6x*(-4x) + 6x*4 + 9*x^2 + 9*(-4x) + 9*4 = .....
6x^3 - 24x^2 + 24x + 9x^2 - 36x + 36 =
6x^3 - 15x^2 - 12x + 36

Answer 22

you forgot the x in -15x^2 bud

Answer 23

oh lol -.-

Answer 24

then i was right lmao u cofused me