91 ! just use a calculator or do it by hand
Answer:
5x3-6x2-4x+7...(a)
Step-by-step explanation:
(5x3-12x+4)+ (6x2-4x+3)
15-12x+4+12-4x+3
5x3-6x2-4x+7
Question: What is the Question?
Answer:
x=16
Step-by-step explanation:
Pythagorean theorem:
20^2-12^2=256
square root of 256=16