Question

Class 9 Chapter polynomials

Let R1 and R2 be the remainders when polynomials x^3 - 2x^2 - 5ax + 7 and
x^3 + ax^2 - 12x + 6 are divided by (x+1) and (x-2) respectively. If 2R1 + R2 = 12, find the value of 'a'.

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Answer 1

Answer:

mai copy mai solve krke btati hu 5min.

phle x+1=0

x=-1

put x= -1

= -1^3+2(-1)^2-5a(-1)+7

= -1+2+5a+7

= -1+2+7+5a

R1 =8+5a

Aage bhi aaese hi solve hoga

mujhe pkka nhi pta ki thik hai ya nhi

may be thik hai

sorry

Answer 2

Answer:

Let R1 and R2 are the remainders when the polynomials

x3

+2x^2

– 5ax – 7 and x3

+ ax2

– 12x + 6 are divided

by x – 1 and x + 2 respectively. If 2R1

+ R2