Answer:
well what do u need help with?
Answer:
x^2+6x+9
Step-by-step explanation:
x^2 +6x
Take the coefficient of x
6
Divide by 2
6/2 = 3
Square it
3^2 = 9
Add 9 to each side
x^2+6x+9
D. There would be one less the second time because one would already be picked.
Step-by-step explanation:
if the 2 matrices are inverse, then their product must be the identity matrix
1 0
0 1
so,
m×3 + 2×-7 = 1
7×3 + 3×-7 = 0
m×-2 + 2×m = 0
7×-2 + 3×m = 1
that means we have to solve only
3m - 14 = 1
3m = 15
m = 5
