Question

use a sutable identity to find the following product a) (2x+3y)(2x+3y) b) (4x+5)(4x-1)​

Answer 1

Step-by-step explanation:

a. (a+b)^2

b. x+(a+b)×x(ab)

hope it is helpful

Answer 2

Step-by-step explanation:

a)using the formula

${(a + b)}^{2} = { a}^{2} + {b}^{2} + 2ab$

(2x+3y)(2x+3y) = (2x+ 3y)^2

= 4x^2 + 9y^2 + 2(2x)(3y)

= 4x^2 + 9y^2 + 12xy

b) using the formula

$(x + a)(x + b) = {x}^{2} + (a + b)x + ab$

(4x+5)(4x-1)= (4x)^2 + (5-1)4x + (5)(-1)

= 16x^2 + 16x - 5