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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The answer is 56 percent black pens
The answer to your question is A
She can run 8 miles because every mile it takes 8 minutes to do so all you had to do was divide 64 and 8