Answer:
Foil Method
(x +4)(x-4)
x times x = x²
x times 4 = 4x
4 times x = 4x
+4 x -4 = -16
x2 + 4x + 4x + -16
x² + 8x + -16
x²-16
Step-by-step explanation:
Foil method
(x+4)(x-4)
first_x.x
outer_x.-4=-4x
inner_4.x=4x
last_4.4=16
x²-4x+4x-16
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Answer:
Foil Method
(x +4)(x-4)
x times x = x²
x times 4 = 4x
4 times x = 4x
+4 x -4 = -16
x2 + 4x + 4x + -16
x² + 8x + -16
Answer:
x²-16
Step-by-step explanation:
Foil method
(x+4)(x-4)
first_x.x
outer_x.-4=-4x
inner_4.x=4x
last_4.4=16
x²-4x+4x-16
x²-16