x2 - 13x = 0x (x - 13) = 0x = 0andx = 13
If you mean: (3x-1)(x+1) = 0, then it is 3x squared+2x-1 = 0. Its solutions are: x = 1/3 or x = -1.
9a squared = 81a^2
a2 + a2 = 2a2
when 144 is squared it is the same as 12
No, unless "a" happens to be equal to 0, or to 1.
If x^2 = 0, x = 0 Only 0^2 can equal 0.
Only if the value of x is zero
No, it equals 0. If you have nothing, and you multiply it by nothing, you still have nothing.
x = zero and x = 13.
-2a^2
Sin squared is equal to 1 - cos squared.
It is x = 0.
x^2 + x = 0 x(x+1) = 0 x = 0 and x = -1
3 squared is equal to 9
Yes. Except where sin x = 0, because then you would be dividing by zero so the quotient is undefined.
3m^2 - 9m = 0 factor out 3m 3m(m - 3) = 0 m = 0 -------- or m = 3 --------