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it is because the X means times and the other x means a mystery number.
example 2 X x = 78
the answer can be anything unless you really study the number until u find out what number it is it helps if u do this:
8
2 2
x this x is 8 because the opposite one is 8
but this only helps if u r learning about shapes
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Solve for x 3 - x 7?
-4
What does 7x squared minus 112 equals?
If x is a real number then, depending on the value of x, any value greater than or equal to -112. Factored, that becomes 7(x +4)(x - 4)
what is 4 times a number x?
Four times a number x equals 4x.
What number times 4 equals 78?
19.5 x 4
X plus y equals 4 and y equals -x-4 have a solution or no solution or an infinite number of solutions?
0
What number times what number equals 80?
4 x 20 = 80
What number times 4 but equals 86?
21.5 x 4 = 86
What number times 4 equals 2500?
625 x 4 = 2500
Fx equals x cubed plus 4?
x = ¼x^4 + 4x + k where k can be any number
What is a example of addition inverses in math?
The additive inverse of a real number is the number that when added to it equals zero, the identity element for addition. That is, the additive inverse of any real number x is -x.
Is 4 a complex number?
A complex number is denoted by Z=X+iY, where X is the real part and iY is the imanginary part. So the number 4 would be 4+i0 and is the real part of a complex number and so 4 by itself is just a real number, not complex.
What is the domain and range of y equals the square root of x squared plus 4?
(x^2)^(1/2) equals x, therefore, y = x+4, which has a range and domain of all real numbers. The graph is a straight line, slope of 1, y-intercept of 4. Are you actually saying y = (x^2+4)^(1/2). If so, the range and domain will also be all real numbers because x^2+4 will never result in a negative number.
