Question

d. (x + y) (x - y) + (2x + y)(2x - y)​

Answer 1

Answer:

3x^2 - 2y^2

Step-by-step explanation:

$(x + y)(x - y) + (2x + y)(2x - y)$

By Using The Identity,

$(x + y)(x - y) = {x}^{2} - {y}^{2}$

We can conclude that ;

${x}^{2} - {y}^{2} + {2x}^{2} - {y}^{2}$

By Calculating The Like terms

${2x}^{2} + {x}^{2} { - y}^{2} - {y}^{2}$

We Get

${3x}^{2} - {2y}^{2}$

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