Question

(x-3) (x+5) using suitable identity

Answer 1

Answer:

${x}^{2} + 2x - 15$

Step-by-step explanation:

ATQ,

$(x - 3)(x + 5)$

Applying the 4th Identity which is

$(x + a)(x + b) = {x}^{2} + x(a + b) + ab$

Here,

x→x

a→-3

b→5

So,

${(x)}^{2} + (x)( - 3 + 5) + ( - 3 \times 5)$

${x}^{2} + 2x - 15$

That's your answer.

Answer 2

Answer:

The ans is in the image it would be helpful