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Romashka-Z-Leto [24]
3 years ago
5

For what values of x is x2-36=5x true? 0 -9 and 4 04 and 9 4 and -9 09 and 4

Mathematics
1 answer:
ipn [44]3 years ago
6 0

Answer:

x = - 4 and x = 9

Step-by-step explanation:

Given

x² - 36 = 5x ( subtract 5x from both sides )

x² - 5x - 36 = 0

Consider the factors of the constant term (- 36) which sum to give the coefficient of the x- term (- 5)

The factors are - 9 and + 4, since

- 9 × 4 = - 36 and - 9 + 4 = - 5, thus

(x - 9)(x + 4) = 0

Equate each factor to zero and solve for x

x - 9 = 0 ⇒ x = 9

x + 4 = 0 ⇒ x = - 4

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