Identify coefficients: Identify the coefficients a, b, and c in the quadratic expression 2h2+9h+10 by comparing it to the standard form ax2+bx+c.a=2, b=9, c=10
Find two numbers: Find two numbers that multiply to a∗c (2∗10=20) and add up to b (9).The numbers 5 and 4 multiply to 20 and add up to 9.
Rewrite middle term: Rewrite the middle term, 9h, using the two numbers found in the previous step: 5h and 4h. 2h2+9h+10 becomes 2h2+5h+4h+10.
Group terms: Group the terms into two pairs: 2h2+5h and 4h+10.
Factor out common factor: Factor out the greatest common factor from each pair.From the first pair (2h2+5h), factor out h: h(2h+5).From the second pair (4h+10), factor out 2: 2(2h+5).
Write final expression: Notice that both groups now contain the common factor (2h+5).Write the expression as (h+2)(2h+5).
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