Identify a, b, c: Identify a, b, and c in the quadratic expression 5h2−20h+15.a=5b=−20c=15
Find Multiplying Numbers: Look for two numbers that multiply to a∗c (5∗15=75) and add up to b (−20).Hmm, let's see... −5 and −15 work.−5∗−15=75−5+−15=−20
Split Middle Term: Write the quadratic expression by splitting the middle term using the two numbers found.5h2−5h−15h+15
Factor by Grouping: Factor by grouping.Group the first two terms and the last two terms.(5h2−5h)−(15h−15)
Factor Common Factors: Factor out the common factors in each group.5h(h−1)−15(h−1)
Factor Common Binomial: Factor out the common binomial factor (h−1).(5h−15)(h−1)
Factor Common Factor: Factor out the common factor of 5 from the first binomial.5(h−3)(h−1)