solve the equation x2+8x+15:0 by factorization method
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4
x²+8x+15
x²+3x+5x+15
x(x+3)+5(x+3)
(x+3)(x+5)
Answered by
4
Answer:
x = -5 and -3
Step-by-step explanation:
x²+8x+15 = 0
=> x² + (5+3)x + 15 = 0
=> x²+5x+3x+15 = 0
=> x(x+5)+3(x+5) = 0
=> (x+5)(x+3) = 0
EITHER,
x+5= 0 or x+3 = 0
=> x = -5 or => x = -3 .
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