Question

(a+b)*(a+b)=a*a+6a+9,then find the value of b​

Answer 1

Answer:

b = 3

Step-by-step explanation:

$(a + b)(a + b) = {(a + b)}^{2} = {a}^{2} + 2ab + {b}^{2} \\ {a}^{2} + 6a + 9 = {a}^{2} + 2 \times 3 \times a + {3}^{2}$

from the formula

2ab = 6a

b = 6a/2a

b = 3

or

b^2 = 9

b = √9 = 3

hope you get your answer