Question

Using factorisation method find roots
x²-25x+144=0​

Answer 1

${x}^{2} - 25x + 144 = 0 \\ {x}^{2} - 16x - 9x + 144 = 0 \\ x(x - 16) - 9(x - 16) = 0 \\ (x - 9)(x - 16) = 0 \\ (x - 9) = 0 \: or \: (x - 16) = 0 \\ x = 9 \: or \: x = 16$

By factorization