X 3 plus x-142 plus x is an equation equal to x3+2x-142.
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x²+6x+9=49 x²+6x-40=0 x1=-6/2 - Square root of ((6/2)²+40) x1=-3 - 7 x1= -10 x2=-6/2 + Square root of ((6/2)²+40) x2=-3 + 7 x2= 4
4-2 isn't 3, it's 2. 3+2 is 5.
if you mean X²+8X-5=0: X1=-8/2 - Square root of ((8/2)²+5) X1=-4 - Square root of 21 X1 is about -8.58 X2=-8/2 + Square root of ((8/2)²+5) X2=-4 + Square root of 21 X2 is about 0.58
Equals 4, Not 32 + 2 equals 4, not 3.No, 2 plus 2 is 4.
The answer is: 3 and 1/2 plus 2 and 3/4 = 6 and 1/4