Ten math (x-7) (x-9) =195
Answers
Answered by
0
(x-7)(x-9)=195
=> x²-9x-7x+63=195
=> x²-16x+63-195=0
=> x²-16x-132=0
=> x²-22x+6x-132=0
=> x(x-22)+6(x-22)=0
=> (x-22)(x+6)=0
therefore, x-22=0 => x=22
or
x+6=0 => x=-6
=> x²-9x-7x+63=195
=> x²-16x+63-195=0
=> x²-16x-132=0
=> x²-22x+6x-132=0
=> x(x-22)+6(x-22)=0
=> (x-22)(x+6)=0
therefore, x-22=0 => x=22
or
x+6=0 => x=-6
Similar questions