Question

(ii) x2 + 21 x + 108​

Answer 1

Answer:

by mid term break

x²+21x+108=0

x²+(12+9)x+108=0

x²+12x+9x+108=0

x(x+12)+9(x+12)=0

(x+12) (x+12)=0

Either

x+12=0

x=-12

OR

x+9=0

x=-9

Answer 2

Answer:

-9,-12

Step-by-step explanation:

x2+9x+12x+108 = 0

x (x+9) +12( x+9) = 0

( x+9 ) ( x+12 ) = 0

( x+9 ) = 0 or. ( x+12 ) = 0

x = -9 or -12

HOPE IT HELPS!!