Answer:
3pf² - 21p²f + 6pf - 42p²
= 3pf² + 6pf - 21p²f - 42p²
= 3pf(f +2) - 21p²(f + 2)
= (3pf - 21p²)(f +0 2)
Answer: (3pf - 21p²)(f + 2)
Step-by-step explanation:
The answer should be B i’m pretty sure
A side of right triangle lying against an angle of 30 degrees is equal to half of the hypotenuse, so
s=4×2=8
Answer: s=8