Question

slove using (a+b)²=a²+b²+2ab question (3x+5)²​

Answer 1

Answer:

(i) (a + 6)² [a = a, b = 6]

= (a)² + 2(a)(6) + (6)²

= a² + 12a + 36

(ii) (3x + 2y)² [a = 3x, b = 2y]

= (3x)² + 2(3x)(2y) + (2y)²

= 9x² + 12xy + 4y²

(iii) (2p + 3q)² [a = 2p, b = 3q]

= (2p)² + 2(2p)(3q) + (3q)²

= 4p² + 12pq + 9q²

(iv) (x² + 5)² [a = x², b = 5]

= (x²)² + 2(x²)(5) + (5)²

= x⁴ + 10x² + 25

Step-by-step explanation:

Answer 2

Answer:

9x^2 + 30x + 25

Step-by-step explanation:

( 3x + 5 )^2

( 3x )^2 + ( 5 )^2 + ( 2 × 3x × 5 )

9x^2 + 25 + 30x

9x^2 + 30x + 25

Hope it helps!!