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nignag [31]
3 years ago
9

For what values of x is x2-36=5x true?

Mathematics
2 answers:
Inga [223]3 years ago
6 0

Answer:Its B. -4 and 9

Step-by-step explanation:

Paladinen [302]3 years ago
5 0

Answer:

x = - 4, x = 9

Step-by-step explanation:

Given

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

x² - 5x - 36 = 0 ← in standard form

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 + 4 = 0 ⇒ x = - 4

x - 9 = 0 ⇒ x = 9

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