Answer:
B. 100
Step-by-step explanation:
(m + n)^2
= m^2 + 2mn + n^2
Rearrange
(m^2 + n^2) + 2mn
Substitute
(68) + 2*16
= 68 + 32
= 100
Answer:
3 (10-a) = 4 i think
Step-by-step explanation:
First simplify the equation and next multiply the 20 with the x^2 and find a number that adds together to give you the middle