how to factor this problem 8r22r1SolutionDear student Thank

how to factor this problem

8r^2+2r-1

Solution

Dear student

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For the given equation that 2r need to be split into t1 and t2 such that the result of performing subtraction I.e. t1- t2 should be 2r and t1t2 = -8r^2

Solving we get t1. = 4r

T2 = 2r

Therefore original equation becomes

8r^2 + 4r - 2r - 1

4r ( 2r + 1) -1 (2r + 1)

(4r - 1)(2r +1)

Solution