Math, asked by AgreatMatt, 1 year ago

(3x + y - 5) (3x - y - 5) solve using algebraic identity

Answers

Answered by Sanjana111111
29
HOPE THIS WILL HELP U :)
Attachments:

HarishAS: Wrong answer.
Sanjana111111: howw
HarishAS: y-5 is not b.
HarishAS: U used identity wrongly.
Sanjana111111: then wht is b??
HarishAS: b is just y.
HarishAS: and a = 3x-5
Answered by KunalTheGreat
33
HI,
=============
Question 
(3x+y−5)(3x−y−5)

Formula :- 
(a+b)(a-b) =a^2-b^2


→(3x)^2 -(y-5)^2

→9x^2-(y^2+25-10y)

→9x^2-y^2-10y+25  AnsR



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:-)


KunalTheGreat: wrong
KunalTheGreat: sorry not mine but yours
AgreatMatt: bro algebraic identity
KunalTheGreat: yep
Sanjana111111: my ans is right or wrong??
AgreatMatt: i dont know i doesn't have the answer but you have multiplied you have to use identity
Sanjana111111: i have used the identity see
HarishAS: Brou didn't use identity.
HarishAS: @kunal the great.
KunalTheGreat: oh
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