the answer is 0 because 2x2= 4 4-4=0
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2x2-9x+4 = (2x-1)(x-4) when factored
6-18= -12 -12/6= -2 -2x2= -4 answer= -4
For x = -4 2x2 + x = 2 (-4)2 + (-4) = 32 - 4 = 28
Order of operations--Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction. 15-2x2 (fifteen minus two times two) 15-4 11
2 sqared is 4 so 2x2 sqared is 4