Math, asked by alinoor, 1 year ago

solve this sums evaluating expressions question number one

Attachments:

RaunakRaj: 3x^2 + 5x+1 when x is (-2) =3×(-2)^2+5×(-2)+1 =3×4+5×(-2)+1 =12+(-10)+1=13-10=3

RaunakRaj: (3x)^2-7y^2 , when x is 3 and y is 2 =(3×3)^2-7×2^2 =9^2-7×4 =81-28 =53

Answers

Answered by RaunakRaj

3(n-1)+2n, when n is 5

3(5-1)+2×5 =12+10 =22

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alinoor: what

RaunakRaj: check in comments

alinoor: yes i got ans

RaunakRaj: any more

RaunakRaj: do u want answer of ques 6 also

alinoor: yes

alinoor: question number 3

RaunakRaj: that I have answered

alinoor: where

alinoor: yes answerd and solve

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