Question

plz solve this four question faster

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

Q7

(X-3)(X+5)

Identity...(x+a)(x+b)=x²+(a+b)x+ab

(X-3)(X+5)=X²+(-3+5)X+(-3×5)

X²+2X-15