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JudyNegative x multiplied by 2 is negative 2x but negative x multiplied by (2) is positive x.
The above answer is not correct, sorry. As the question is stated, indeed -x2 does equal -x2. Now, I would imagine that the person asking the question really wanted to state it using squares: Why is -x^2 not equal to (-x)^2? (NOTE: the caret "^" means "raised to a power") In this case no mater what x is (negative or positive) the second term will always be positive (if x is negative then -x = +x and +x squared will be positive.) The first term however could be negative or positive depending on what x is. If x is positive then the term will be negative because the "square" is only squaring the x not the negative sign. If x is negative then the term will be positive ( -(-x) = +x). Hope this helps!
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What is 2x squared plus x2 equal?
2x2 + x2 = 3x2
Is x2 equal to 2x?
Only if x is equal to 2.
What is X squared plus x squared equal to?
x2 + x2 = 2x2 2x^2
X squared plus xx is equal to 15?
x2+xx = 15 Which is the same as: x2+x2 =15 2x2 = 15 x2 = 7.5 x = the square root of 7.5
What is x squared plus x squared equal to 48?
x2 + x2 = 48 2x2 = 48 x2 = 24 x = √24 x = 2√6
