substitution method
Step-by-step explanation:
- use second equation
- make x subject of the formula
- put it back in the first equation
- solve to find the value of y
- substitute y value in any equation between the two.
- then you get x value
Answer:
A
Step-by-step explanation:
-2x^3 - 2x^2 + 12x
= -2x (x^2 + x - 6)
= -2x(x + 3)(x - 2)
Its D
Answer:
Step-by-step explanation:
815372676
Answer:
x + 4
Step-by-step explanation:
(x - 9)(x + 4)
FOIL
x^2 + 4x - 9x - 36 = x^2 - 5x - 36
