3 years ago

PLEASE HELP DUE IN 15 MNUTES MARKING BRAINLIEST AND 15 POINTS YOU DONT HAVE TO EXPLAIN MUCH

Mathematics

1 answer:

hram777 [196]3 years ago

5 0

Answer:

see below

Step-by-step explanation:

11a -2(x^2 -3)

Distribute

-2*x^2 -2(-3)

-2x^2 +6

11b 2x(x+4)

Distribute

2x*x +2x*4

2x^2 +8x

12 The perimeter is the sum of all sides

The top is equal to the bottom and the left side is equal to the right

x-10 + x+20+x-10+x+20

Combine like terms

4x +20

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