It is: -2x squared
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2X * 2X * 2X = 8X^3 2X^3 is saying 2*( X * X * X) = 2X^3
The expression "negative x plus 3x" can be simplified by combining like terms. Negative x can be written as -1x, so the expression becomes -1x + 3x. When you combine -1x and 3x, you get 2x. Therefore, the simplified expression is 2x.
we write 2 times x as 2x so if x=2, 2x=2(2)=4
x times x = x2 (it's like 6 times 6. it would be 62. not 6 times 2. 2x means x times 2)
2x+x is 3x