Question

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Simplify: (4a + 2b)(a – b)

A.
4a2– 6ab – 2b2

B.
4a2 – 2ab – 2b2

C.
4a2 – 8ab – 2b2

D.
4a2 + 2ab – 2b2

Answer 1

is itA.

Answer 2

Yes it is A....

Answer 3

can u help me with more

Answer 4

As (4a+2b)a-(4a+2b)b
so =4a^2+2ab-4ab-2b^2
then =4a^2-2b^2-2ab

Answer 5

B is right.

Answer 6

Sorry, my keyboard was broken.

Answer 7

I can help you with more.

Answer 8

Simplify.
(4a – 3)^2

A.
162a – 12 + 9

B.
8a2 – 24a + 6

C.
16a2 – 9

D.
16a2 – 24a + 9

Answer 9

(4a – 3)^2 means
(4a – 3)(4a – 3).

Answer 10

16a^2-9 is that right

Answer 11

Let me see.
(4a – 3)(4a – 3)
=(4a-3)4a-(4a – 3)3
=16a^2-12a-12a+9
So the answer is
16a^2-24a+9

Answer 12

Simplify.
(x – 4)(x2 – 3x – 9)

A.
x3 – 4x2 – 12x + 36

B.
x3 + x2 – 3x – 36

C.
x3 – 7x2 – 21x + 36

D.
x3 – 7x2 + 3x + 36

Answer 13

You should try to do it yourself, and then I will check your work.

Answer 14

I got D.

Answer 15

Let me see.

Answer 16

Great, you are right!

Answer 17

Simplify (x2 + 5x + 12)(x2 + 6x + 7).

A.
x4 + 37x2 + 84

B.
x4 + 30x2 + 84

C.
x4+ 11x3 + 49x2 + 107x + 84

D.
x4 + 6x3 + 7x2 + 11x + 19

i tried but i cant get it

Answer 18

i got D.

Answer 19

All right let me help you.

Answer 20

I think the right answer is C.

Answer 21

i have one more quetion

Answer 22

Okay.

Answer 23

Find the volume of the box. Use the formula V = lwh.



A.
6x3 + 13x2 + x – 2

B.
6x3+ 6x – 2

C.
6x3 – 2

D.
6x2 – 17x2 + x – 2