Question

find x, x²-2x+65=100​

Answer 1

Answer:

x^2-2x+65=100

=> x^2-2x+65 -100=0

=> x^2-2x-35=0

=> x^2-7x+5x-35=0

=> x(x-7)+5(x-7)=0

=> (x-7)(x+5)=0

x-7=0

x=7

again,

x+5=0

x= -5