Question

multile by a bianomial by bianomial (a+2)and (a+10)​

Answer 1

Step-by-step explanation:

a^2 + 10a + 2a + 20

a^2 + 12a + 20

a^2 + 10a + 2a + 20

a(a+10) + 2(a+10)

(a+2)(a+10)

a+2 =0

a = -2

or

a+10 = 0

a = -10

Answer 2

You can e identity (x+a) (x+b) = x²+(a+b)x + ab

Here a and b are 2 and 10..

= a²+ (2+10)a + 2 × 10

= a²+12a + 20.. This is your ans.