Question

Expand and simplify the given expression: (x+3)(x-4).​

Answer 1

Answer:

x²-12

Step-by-step explanation:

(x+3)(x-4)

(x+3)×(x-4)

x+3×x-4

x²-12

Answer 2

(x+3)(x-4)

Now multiply 2nd bracket by x

x(x-4)------(1)

Similarly,multiply 2nd bracket by +3

We get,

+3(x-4)------(2)

Adding

x(x-4)+3(x-4)------(3)

Now,

(x+3)(x-4) =x(x-4)+3(x-4)

= x2-4x+3x-12

(x+3)(x-4) =x2-x-12