Question #99e62

1 Answer
smendyka
Nov 15, 2016

100r^2 + 20r + 1 = (10r + 1)(10r + 1)100r2+20r+1=(10r+1)(10r+1)

Explanation:

You factor this by looking for combination of integers which when added equal 20 and when multiplied equal 100. Additionally, these integers can be the coefficients of the rr variable. A good combination is 10 and 10 giving:

100r^2 + 20r + 1 = (10r + 1)(10r + 1)100r2+20r+1=(10r+1)(10r+1)

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