Question

solve the following by using identity (2x+5y)²-(3x-2y)²
it's urgent pls answer quickly​

Answer 1

Question :-

solve the following by using identity (2x+5y)²-(3x-2y)².

Identity to use :-

a²-b² = (a+b)(a-b)

• a = (2x+5y)
• b = (3x-2y)

Substituting the values,

(2x+5y)²-(3x-2y)²

=> [(2x+5y)+(3x-2y)][(2x+5y)-(3x-2y)]

Removing the brackets,

[2x+5y+3x-2y][2x+5y-3x+2y]

Adding the like terms,

(5x-3y)(7y-x) is the answer.

Hope it helps

Have a great day!

Answer 2

Step-by-step explanation:

Using identities

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