If you mean: -2(3x-3) = 7x-2 then the value of x works out as 8/13
Without an equality sign the expession given is not an equation. But if you mean 8 = 42x then the value od x is 8/42
x2 - 42x + 441 = (x - 21)2
x3 + 13x2 + 42x = x(x + 6)(x + 7).
126 ._.
If you mean: -2(3x-3) = 7x-2 then the value of x works out as 8/13
Without an equality sign the expession given is not an equation. But if you mean 8 = 42x then the value od x is 8/42
x2 - 42x + 441 = (x - 21)2
if x-42x-8=0 x=-5.12500
y=x^42-32x^2-x y' = 42x^41 - 32(2)x - 1 y' = 42x^41 -64x-1
x = 8y = -42x - y = 2(8) - (-4) = 16 + 4 = 20
18 and 24 x^2 - 42x + 432 = 0 (x - 18)(x - 24) = 0 x = 18 and x = 24 Why? x + y = 42 xy = 432 y = 432/x x + 432/x = 42 X^2 + 432 = 42x x^2 - 42x + 432 = 0If two numbers have a sum of 42 and a product of 432, the two numbers are 18 and 24.
x3 + 13x2 + 42x = x(x + 6)(x + 7).
y-42x = 24 >> Add 42x to both sides << y=24+42x >> Subtract 24 from both sides << y-24=42x >> Divine both sides by 42 << x=(y-24)/42
42x + 1 = 8x - 1Subtract 1 from each side:42x = 8x - 2Subtract 8x from each side:34x = -2Divide each side by 34:x = -2/34 = -1/17
126 ._.
5x - 42x + 5 = - 37 x +5