Math, asked by muskanah160, 5 months ago

factorise a²-24a-81

Answers

Answered by MohammadZohri

Step-by-step explanation:

Q. Factorise:- a²-24a-81

Solution:

By finding two numbers whose product is -81 and whose sum is -24..

[since,3-27=-24 and 3×(-27)=-81]

a²-24a-81

=a²+3a-27a-81

=a(a+3)-27(a+3)

=(a+3) (a-27)

(a+3) (a-27) Ans....

I hope it will help you!!

Answered by rajnisoni

ᴀsᴋ :ᴡʜɪᴄʜ ᴛᴡᴏ ɴᴜᴍʙᴇʀ ᴀᴅᴅ ᴜᴘ

ᴛᴏ -25ᴀɴᴅ ᴍᴜʟᴛɪᴘʟʏ ᴛᴏ -81 ?

$- 27 \: and \: 3$

ʀᴇᴡʀɪᴛᴇ ᴛʜᴇ ᴇxᴘʀᴇssɪᴏɴs ᴜsɪɴɢ ᴛʜᴇ ᴀʙᴏᴠᴇ .

$(a - 27) \: \: (a + 3)$

sօlѵҽ վօվɾ զմҽsԵíօղ ตαԵҽ ժҽαɾ▪▪▪▪▪▪

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