Question

Factorise b²+ 28ab + 196a²
a) (b² - 14a)²
b) (b² + 14a)²
c) (b-14a) ²
d) (b+ 14a)²​

Answer 1

Step-by-step explanation:

b²+28ab+196a² (is in the form of a²+b²+2ab)

now we make it (a+b)²

a² = b² ( square is cut with square)

a = b

b² = 196a²

now we take the square root of √196 = 14 × 14

b = 14a

now we write it in the form of (a+b)²

(b+14a)²

option.D) . (b+14a)²is right answer......