A, B, and C are correct. My bad.
Answer:
Step-by-step explanation:
x + 67 = 3x - 53 ( exterior angle of a triangle is equal to the sum of two opposite interior angles )
3x - x = 67 + 53
2x =120
x = 120 /2
x = 60
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➷ 3x + 1 = 511
Subtract 1 from both sides:
3x = 510
Divide both sides by 3:
x = 170
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Answer: (
x-4)(x+4)
Step-by-step explanation:
x2+4x-4x-16
x2+4x-4x-16
x(x+4)-4(x+4)
(
x-4)(x+4)
