Question

plz answer this 2 question ​

Answer 1

Answer:

(d) -25

Step-by-step explanation:

Use the identity

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

therefore,

$(x - 5y)(x + 5y) = {x}^{2} - ({5y})^{2}$

= x²- 25y²

and can be written as

= x²+ - 25 y².

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Answer 2

Answer:

first you have to use the formula

(a+b) (a-b) = a²-b²

Step-by-step explanation:

when you apply this you get

(x+5y) (x-5y)=x²-25y²

as 5 gets squared