Math, asked by shristi7002, 3 months ago

Use suitable identity to get the products
a) (x +5 ) (x-5)
b) (x/2 + 3y/4) (x/2 + 3y/4)

Answers

Answered by ananditanunes65

$(x + 5)(x - 5) = {x}^{2} - {5}^{2} = {x}^{2} - 25$
$(x/2 + 3y/4)(x/2 - 3y/4) = {(x/2)}^{2} - 2×x/2×3y/4+{(3y/4)}^{2}=(x²/4)+3y/2+(9y²/16)$

Hope this helps you

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dashwanthmadduri: no he asking identities

ananditanunes65: I have solved by using identity

ananditanunes65: (a+b)(a-b)=(a²-b²)

shristi7002: yuup!!! ohk

Answered by akshaya12378

Answer:

a) x²-25

b) please check the question

no identity for such type of questions

Attachments:

shristi7002: but in question it's there

ananditanunes65: Its (a+b)(a+b)=(a²+b²)

akshaya12378: no it's (a+b)(a-b)=a²-b²

akshaya12378: a²+b²=(a+b)²-2ab

ananditanunes65: No

ananditanunes65: Its (a+b)(a+b)=a²+2ab+b²

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