EXERCISE 2.2 CLASS 9 NCERT,

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EXERCISE 2.2 CLASS9 NCERT,
NCERT CLASS9 EXERCISE 2.2 ,
CLASS9 NCERT EXERCISE 2.2 ,
Q1.Find the value of the polynomial 5x – 4x² + 3 at(i) x = 0 (ii) x = –1 (iii) x = 2,
Q1. निम्नलिखित पर व्यंजकों के मान ज्ञात कीजिये
(i) x = 0 (ii) x = –1 (iii) x = 2,
Q2. Find p(0), p(1) and p(2) for each of the following polynomials:
p(y) = y² – y + 1 (iii) p(x) = x³ ,
Q2.निम्नलिखित बहुपदों में से प्रत्येक बहुपद के लिए p(0), p(1) और p(2) के मान ज्ञात कीजिये p(y) = y² – y + 1 (iii) p(x) = x³,
Q3. Verify whether the following are zeroes of the polynomial, indicated against them. (i) p(x) = 3x + 1, x =–1/3 (ii)p(x)= 5x-π,x= 4/5 (iii) p(x) = x² – 1, x = 1, –1 (vi) p(x) = lx + m, x = –m/l (v) p(x) = x², x = 0 (iv) p(x) = (x + 1) (x – 2), x = – 1, 2 (vii) p(x) = 3x² – 1, x = (viii) p(x) = 2x + 1, x =1/2
Q3 सत्यापित कीजिये कि दिखाए गये मान निम्नलिखित स्थितियों में संगत बहुपद के शुन्यक हैं :
(i) p(x) = 3x + 1, x =–1/3 (ii)p(x)= 5x-π,x= 4/5 (iii) p(x) = x² – 1, x = 1, –1 (vi) p(x) = lx + m, x = –m/l (v) p(x) = x², x = 0 (iv) p(x) = (x + 1) (x – 2), x = – 1, 2 (vii) p(x) = 3x² – 1, x = (viii) p(x) = 2x + 1, x =1/2
Q4.Find the zero of the polynomial in each of the following cases(i) p(x) = x + 5 (ii) p(x) = x – 5 (iii) p(x) = 2x + 5 (iv) p(x) = 3x – 2
(v) p(x) = 3x (vi) p(x) = ax, aǂ0 (vii) p(x) = cx + d, cǂ0, c, d are real numbers
Q4. निम्नलिखित स्थितियों में प्रत्येक स्थिति में बहुपद का शुन्यक ज्ञात कीजिये :
(i) p(x) = x + 5 (ii) p(x) = x – 5 (iii) p(x) = 2x + 5 (iv) p(x) = 3x – 2
(v) p(x) = 3x (vi) p(x) = ax, aǂ0 (vii) p(x) = cx + d, cǂ0, c, d are real numbers