Question

Factorise
a.Using identity (49a2–36b2)
b.Using splitting the middle term (x2–30x–99)

Answer 1

x²x²-30x-99=0

x²-3x+33x-99=0

x(×-3)+33(x-3)=0

(x+33) (x-3)=0

x+33=0. | x-3=0

x= (-33) | x= (3) (ans)

hope it helps u guys