Find the value or values of x in the quadratic equation x2=6x-9.
2 answers:
Hi Harris
x²=6x-9
First thing we need to do is
subtract 6x-9 from the booth sides
x²-(6x-9)=6x-9-(6x-9)
x²-6x+9=0
Now we gonna factor the left side
(x-3)(x-3)=0
Set factor equal 0
x-3=0 or x-3=0
x=3
I hope that's help !
x² = 6x - 9, or x² - 6x + 9 = 0, or x² - 2*x*3 + 3² = 0, or (x-3)² = 0 => x₁ = x₂ = 3.
Green eyes.
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