Simplify ?

(3a4-2a2+5a-10)-(2a4+4a2+5a-2)...

= a^4 - 6a² - 8

-------------------------

(2e-2f)(2f+8) =

(2e)(2f) + (2e)(8) -(2f)(2f) -(2f)(8) =

4ef + 16e - 4f² - 16f

The problem to solve is:

(3a4-2a2+5a-10)-(2a4+4a2+5a-2)

Multiply a and 3

Multiply a and 1

The a just gets copied along.

The answer is a

a

3*a evaluates to 3a

Multiply 4 and 3a

Multiply 1 and a

The a just gets copied along.

a

3*a*4 evaluates to 12a

Multiply a and 2

Multiply a and 1

The a just gets copied along.

The answer is a

a

2*a evaluates to 2a

Multiply 2 and 2a

Multiply 1 and a

The a just gets copied along.

a

2*a*2 evaluates to 4a

3*a*4-2*a*2 evaluates to 8a

Multiply a and 5

Multiply a and 1

The a just gets copied along.

The answer is a

a

5*a evaluates to 5a

3*a*4-2*a*2+5*a evaluates to 13a

3*a*4-2*a*2+5*a-10 evaluates to 13a-10

Multiply a and 2

Multiply a and 1

The a just gets copied along.

The answer is a

a

2*a evaluates to 2a

Multiply 4 and 2a

Multiply 1 and a

The a just gets copied along.

a

2*a*4 evaluates to 8a

Multiply a and 4

Multiply a and 1

The a just gets copied along.

The answer is a

a

4*a evaluates to 4a

Multiply 2 and 4a

Multiply 1 and a

The a just gets copied along.

a

4*a*2 evaluates to 8a

2*a*4+4*a*2 evaluates to 16a

Multiply a and 5

Multiply a and 1

The a just gets copied along.

The answer is a

a

5*a evaluates to 5a

2*a*4+4*a*2+5*a evaluates to 21a

2*a*4+4*a*2+5*a-2 evaluates to 21a-2

To subtract the polynomials 13a-10 and 21a-2 we try to subtract terms in one polynomialwith any like terms in the other polynomial.

Be very careful with the "-" sign in front of 21a-2 it is to be used on all terms in it.

13a - 21a = -8a

-10 - -2 = -8

The answer is -8a-8

(3*a*4-2*a*2+5*a-10)-(2*a*4+4*a*2+5*a-2) evaluates to -8a-8

The final answer is

-8a-8

#1) you can rewrite the equation by taking away the first set of () and then distribute the negative sign into the 2nd set to get rid of them (so all the + signs in the 2nd set of () would become -'s). Then you'll + or - (in this case, subtract) all like terms: for instance, 3a4 - 2a4 = a4, -2a2 - 4a2 = -6a2, etc.

#2) This is a little more complex. Do you know the FOIL method? F=first, O=outside, I=inside, L=last. So you multiply the terms in each set of () in that order. For instance, first multiply 2e x 2f = 4ef (that's the FIRST set of terms); then multiply the two outside terms: 2e x 8; then the two inside terms: -2f x 2f; then the two last terms, -2f x 8.

I hope this is clear, and that it helps.

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lol no equation

just multiply the brackets out and then simplify

hope that helped