Find the factors of the polynomial given below.(2x^2+x-1)
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Answer:
1 / 2 , -1
Step-by-step explanation:
2x ^ 2 + x - 1
Formula : -b + or - square root of b^2 -4ac / 2a
= -1 + or - square root of 1^2 - 4×2×(-1) / 2×2
= -1 + or - square root of 1+8 / 4
= -1 + or - 3 / 4
= -1 + 3 /4 ; -1 - 3 / 4
= 2 / 4 ; - 4 / 4
= 1 / 2 ; -1
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