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Mumz [18]
3 years ago
5

Solve the following equation. x^2 + 6x − 40 = 0

Mathematics
1 answer:
jonny [76]3 years ago
8 0

Answer:

x = 4 and -10

Step-by-step explanation:

Given the equation

x²+6x-40= 0

The common factors to use for the factorisation are +10 and -4

x²+(10x-4x)-40=0

(x²+10x)-(4x-40) = 0

x(x+10)-4(x+10) = 0

(x-4)(x+10) = 0

x-4 =0 and x+10 = 0

x = 4 and x = -10

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