2 years ago

For what value of x is the square of the binomial x+1 one hundred and twenty greater than the square of the binomial x-3

Mathematics

1 answer:

My name is Ann [436]2 years ago

3 0

Answer:

x = 16

Step-by-step explanation:

(x + 1)² = (x - 3)² + 120

x² + 2x + 1 = x² - 6x + 9 + 120

8x = 128

x = 16

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