Find the smaller value of x that satisfies the equation x2 + 7x + 10...

Mathematics

WAEC 2011

Find the smaller value of x that satisfies the equation x₂ + 7x + 10 = 0

A. -5
B. -2
C. 2
D. 5

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Correct Answer: Option A

Explanation

x² + 7x + 10 = 0

x² + 5x + 2x + 10 = 0

x(x + 5) + 2(x + 5) = 0

(x + 2)(x + 5) = 0

x + 2 = 0 or x + 5 = 0

x = -2 or x = -5

the smaller value x = -5

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Find the smaller value of x that satisfies the equation x2 + 7x + 10...

Correct Answer: Option A

Explanation

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