Simplify the expression x( 2x - 1) + 5 and find its value at x = -2
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2
Step-by-step explanation:
=-2×2×-2+2 +5
=8+2+5
=15
Answered by
1
Simplify the expression x( 2x - 1) + 5 and find its value at x = -2
➮-2(2×-2 - 1) + 5
➮-2(-4 - 1) + 5 (-2×-4=+8 because negative multiplied by negative results into positive)
➮ 8 - 2 + 5
➮ 13 - 2
➮ 11
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