Question

x ki power 2 - 21 X + 90​

Answer 1

Step-by-step explanation:

${x}^{2} - 21x + 90$

${x}^{2} - 6x - 15x + 90$

take common:

$x(x - 6) - 15(x - 6)$

$(x - 15)(x - 6)$

solve for x:

$x = 15 and x = 6$

hence, this are the solution for given quadratic equation