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4 votes
Solve by factorising x^2 + 8x + 15 = 0

User Ekstroem
by
7.2k points

1 Answer

6 votes

Answer:

See below

Explanation:

x² + 8x + 15 = 0

x² + 5x + 3x + 15 = 0

x x (x + 5) + 3x + 15 = 0

xx (x + 5) +3 (x + 5) = 0

(x + 5) × (x + 3) = 0 → x + 5 = 0 x + 3 = 0

x = -5

x + 3 = 0

x = -5

x = -3

x1 = -5

x2 = -3

Hope this helped ! :)

User Alex Whittemore
by
8.2k points

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