-3x2 + 22x = 0
You start by dividing both sides by x:
∴ -3x + 22 = 0
Then rearrange to solve for x:
∴3x = 22
∴ x = 7 + 1/3
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3x2 + 22x + 7 = 3x2 +21x + x + 7 = 3x(x + 7) + (x + 7) = (x + 7)(3x + 1)
Set the equation equal to zero. 3x2 - x = -1 3x2 - x + 1 = 0 The equation is quadratic, but can not be factored. Use the quadratic equation.
no 3x2=6 then 4x-15= -60 so 6 added with - 60 = -54
x2-5-4x2+3x = 0 -3x2+3x-5 = 0 or as 3x2-3x+5 = 0
3x^2=-20 so x^2=-20/3 this has no real roots but the plus of minus i(square root of 20/3) is a solution if we allow complex numbers.