Factor x^2+3x-28
Problem
Solution
Identify the coefficients of the quadratic expression in the form
a*x2+b*x+c wherea=1 b=3 andc=−28 Find two numbers that multiply to
c (which is−28 and add tob (which is3 .Determine the factors of
−28 pairs include(−1,28) (1,−28) (−2,14) (2,−14) and(−4,7) Select the pair
(−4,7) because−4+7=3 Write the expression in factored form
(x+p)*(x+q) using the identified numbers.
Final Answer
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