Question

please solve this question and those who will answer this question I will mark as branlist​

Answer 1

Answer:

X² + 11x + 30

= x² + 5x + 6x +30

= x(x+5)+6(x+5)

= (x+5) (x+6)

X^2-12x-9x+108

x(x-12)-9(x-12)

(x-12)(x-9)

x=12 or x=9

x^-10x+25

x^2-5x-5x+25

x(x-5)-5(x-5)

(x-5)(x-5) 

X²-x-156

=x²-13x+12x-156

=x(x-13)+12(x-13)

=(x-13)(x+12)

X²-51x+378

x²-(42x+9x)+378

x²-42x-9x+378

x(x-42)-9(x-42)

(x-42)(x-9)

x^2+7x-18

x^2+9x-2x-18

x(x+9)-2(x+9)

(x-2) (x+9)