Identify Variables: Identify a, b, and c in the quadratic expression y2+6y+8. The quadratic expression is in the form y2+by+c, where a=1, b=6, and c=8.
Find Multiplying Numbers: Find two numbers that multiply to c (which is 8) and add up to b (which is 6).We need to find two numbers that multiply to 8 and add up to 6. The numbers 2 and 4 satisfy these conditions because 2×4=8 and 2+4=6.
Write Factored Form: Write the factored form using the two numbers found in Step 2.The factored form of the quadratic expression is (y+2)(y+4), since these are the binomials that give us the original expression when multiplied out.
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