Identify a, b, c: Identify a, b, and c in the quadratic expression 2y2+5y+3. Compare 2y2+5y+3 with ax2+bx+c. a=2b0b1
Find numbers and add: Find two numbers that multiply to a∗c (which is 2∗3=6) and add up to b (which is 5).The two numbers that satisfy these conditions are 2 and 3 because:2∗3=62+3=5
Rewrite middle term: Rewrite the middle term of the quadratic expression using the two numbers found in Step 2.The expression 2y2+5y+3 can be rewritten by splitting the middle term into 2y and 3y:2y2+5y+3=2y2+2y+3y+3
Factor by grouping: Factor by grouping.Group the first two terms together and the last two terms together:(2y2+2y)+(3y+3)Factor out the common factor from each group:2y(y+1)+3(y+1)
Factor common binomial: Factor out the common binomial factor.Since both groups contain the factor (y+1), factor it out:2y(y+1)+3(y+1)=(2y+3)(y+1)
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