Question

expand (x+4) (x+7) ​

Answer 1

(x+4)(x+7)

[(x+a)(x+b)=x²+(a+b)x+ab]

here x=x , a=4 and b=7

x²+(4+7)x+4×7

x²+11x+28

Answer 2

Answer:

x(x + 7 ) + 4 ( x +7) = x² + 7x + 4x + 28 = x² + 11 x + 28