3 years ago

Solve x2 + 6x + 7 = 0.

1 answer:

7 0

Answer:

x = -6 and -1

Step-by-step explanation:

x^2 + 6x + 7

Factorise- find two numbers that multiply to be 6 and add to be 7: 6 and 1

(x+6)(x+1)

Set each expression equal to 0 and solve

x + 6 = 0 -> x = -6

x + 1 = 0 -> x = -1

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