Question

Solve. x^2 = 10x – 20

Answer 1

x2-10x+25=20+25
x2-10x+25=45
(x-5)2 = 45
x-5 = square root of 45
answer:5 plus and minus square root of 45

Answer 2

set equal to zero:
x^2-10x+20=0
again, this cannot be factored so you must use the quadratic formula. can you take it from here

Answer 3

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