6x - 3 = 2x + 1
Add 3 to each side:
6x = 2x + 4
Subtract 2x from each side:
4x = 4
Divide each side by 4:
x = 1
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-2x plus 3y equals 1
We're on it . . .6x3 + 4x2 = 2xSubtract 2x from each side:6x3 + 4x2 - 2x = 0Divide each side by 2:(Don't divide by 'x' ... you'll lose a root.)3x3 + 2x2 -x = 0Factor the left side:x (3x2 + 2x - 1) = 0x (3x - 1) (x + 1) = 0x = 0x = 1/3x = -1
NM equals 2x + 1, as stated in the question!
The answer to 1 over 2x plus 13 equals 9 is x equals -8.
6x3 - x2 + 17 = 2x2 + 47 6x3 - x2 - 2x2 = 47 - 17 x2(6x - 1 - 2) = 30 this is the simplest factorisation.