1 answer:
Answer:
x^2+10x+21
Step-by-step explanation:
Blue box: x*x=x^2
Green box: x*3=3x
Purple box: 7*x=7x
Orange box: 7*3=21
x^2+(3x+7x)+21
Combine like term
A: x^2+10x+21
You might be interested in
Answer:
11
Step-by-step explanation:
you just divide it
Answer:
57
Step-by-step explanation:
All u have to do is 20-1=19
I’m not sure never took that test
Answer:
10. cross multiply
7x=28×9
7x=252
x=36
12. cross multiply
2x=12×3
2x=36
x=18
