Answer:
number 1 is 5x 1/2 the others I'd not know
Answer:
x^2+7x+12
Step-by-step explanation:
(x+3) (x+4)
FOIL
first: x*x = x^2
outer: 4x
inner: 3x
last: 3*4 =12
Add them together
x^2 +4x+3x+12
x^2+7x+12
Answer:

Step-by-step explanation:
♡ Good Lessons ♡
Answer:
30 m
Step-by-step explanation:
51-21=30
<h2><em><u>
PLEASE VOTE BRAINLIEST GIVE THANKS</u></em></h2>
Answer:145
Step-by-step explanation:x-5+3x+25=180
4x+20=180 4x=160 x=40. <k=120+25=145