Factor x^2-7x-8

Problem

x2−7*x−8

Solution

1. Identify the coefficients of the quadratic expression in the form a*x2+b*x+c where a=1 b=−7 and c=−8

2. Find two numbers that multiply to c (which is −8 and add to b (which is −7.

3. Determine the factors by testing pairs of numbers that multiply to −8 1 and −8 satisfy the condition because 1 + (-8) = -7$.

4. Write the expression in factored form (x+p)*(x+q) using the numbers found.

Final Answer

x2−7*x−8=(x−8)*(x+1)

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