Identify a, b, c: Identify a, b, and c in the quadratic expression x2+8x+12. Compare x2+8x+12 with the standard quadratic form ax2+bx+c. Here, a=1, b0, and b1.
Find Multiplying Numbers: Find two numbers that multiply to ac (which is a×c) and add up to b.Since a=1, we only need to consider c=12 for the product.We need two numbers that multiply to 12 and add up to 8.The numbers 2 and 6 satisfy these conditions because 2×6=12 and a×c0.
Split Middle Term: Write the quadratic expression using the two numbers found in Step 2 to split the middle term. x2+2x+6x+12
Factor by Grouping: Factor by grouping.Group the terms to factor out common factors:(x2+2x)+(6x+12)Factor out an x from the first group and 6 from the second group:x(x+2)+6(x+2)
Factor Common Binomial: Factor out the common binomial factor (x+2).(x+2)(x+6)
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