Question

find the zeroes of x^2+15x+54 are verify the ralition ship

Answer 1

Answer:

x²+15x54=0

x²+(9+6) x+54=0

x²+9x+6x+54=0

x(x+9)+6(x+9) =0

(x+9)(x+6) =0

x+9=0

x=-9

or..x+6=0

x=-6

now verify..if x=-9

then, x²+15x+54

=(-9)²+15.(-9)+54

=81-135+54

=135-135

=0

or..x=-6

then, x²+15x+54

=(-6)²+15.(-6)+54

=36-90+54

=90-90

=0

Answer 2

x^2+15x+54

Answer:

=x^2+6x+9x+54

=x(x+6)+9(x+6)

(x+6)(x+9)