Question

Find the prodect : (a)-(4x +3y) (4×+3y) ANS : (c) (x- y) (x-y) ANS : (d) (3x - 5y) (3x-5y) ANS : (e) (8x+5y) (8x- 5y)


please the questions! ​

Answer 1

Step-by-step explanation:

(a)-[(4x+3y)²]

-[16x²+24xy+9y²]

-16x²-24xy-9y²

[Using the identity (a+b)²=a²+2ab+b²]

(c)(x-y)(x-y)

(x-y)²

x²-2xy+y²

[Using the identity (a-b)²=a²-2ab+b²]

(d)(3x-5y)(3x-5y)

(3x-5y)²

9x²-30xy+25y²

[Using the identity (a-b)²=a²-2ab+b²]

(e)(8x+5y)(8x-5y)

(8x)²-(5y)²

64x²-25y²

[Using the identity (a-b)(a+b)=a²-b²]