Question

(9x+a)(x+b) is equal to -
(a) x^2+ax+ab
(b) x^2 +(a+b)x+ab
(c) x^2+bx+ab
(d) x^2+ab​

Answer 1

Answer:

x^2 + (a+b)x +ab

Step-by-step explanation:

= x × x + x × b + a × x + a × b

= x^2 + bx + ax + ab

= x^2 + ( a+b)x + ab

Answer 2

Answer:

$(b) \: x^2 +(a+b)x+ab$

Step-by-step explanation:

It is the correct answer.