Answer:
(a+b)^2+(a-b)^2=2(a^2+b^2)
expanding:
a² + 2ab + b² + a² -2ab + b² = 2a² + 2b²
2a² + 2b² = 2a² + 2b²
Answer:
no solutions
Step-by-step explanation:
−2a + 2a + 7 = 8
Combine like terms
7 = 8
This is never true so there are no solutions
Answer:
Step-by-step explanation:
5x + 2y = - 2
2y = - 5x - 2
y = x - 1
15 = 3*5
64= 2*2*2*2*2*2
There are no common factors so the GCF is 1