Question

x^2-5x+6=(-3)^2-5 (-3)+6=9-15+6=0 substitute x=-3?

Answer 1

${( - 3)}^{2} - 5( - 3) + 6 \\ = 9 + 15 + 6 \\ = 30$

Answer 2

X^2-5x+6
=(-3)^2-5 (-3)+6
=9-15+6
=0 Ans