Q1(iii):

Find the value of the polynomial $5x – 4x^2 + 3$ at (iii) $x = 2$

More Questions from Class 9 Mathematics Polynomials EXERCISE 2.2

• Q1(i): Find the value of the polynomial $5x – 4x^2 + 3$ at (i) $x = 0$
• Q1(ii): Find the value of the polynomial $5x – 4x^2 + 3$ at (ii) $x = –1$
• Q2(i): Find $p(0)$, $p(1)$ and $p(2)$ for each of the following polynomials: (i) $p(y) = y^2 – y + 1$
• Q2(ii): Find $p(0)$, $p(1)$ and $p(2)$ for each of the following polynomials: (ii) $p(t) = 2 + t + 2t^2 – t^3$
• Q2(iii): Find $p(0)$, $p(1)$ and $p(2)$ for each of the following polynomials: (iii) $p(x) = x^3$
• Q2(iv): Find $p(0)$, $p(1)$ and $p(2)$ for each of the following polynomials: (iv) $p(x) = (x – 1) (x + 1)$
• Q3(i): Verify whether the following are zeroes of the polynomial, indicated against them. (i) $p(x) = 3x + 1, x = –\frac{1}{3}$
• Q3(ii): Verify whether the following are zeroes of the polynomial, indicated against them. (ii) $p(x) = 5x – \pi, x = \frac{4}{5}$
• Q3(iii): Verify whether the following are zeroes of the polynomial, indicated against them. (iii) $p(x) = x^2 – 1, x = 1, –1$
• Q3(iv): Verify whether the following are zeroes of the polynomial, indicated against them. (iv) $p(x) = (x + 1) (x – 2), x = – 1, 2$
• Q3(v): Verify whether the following are zeroes of the polynomial, indicated against them. (v) $p(x) = x^2, x = 0$
• Q3(vi): Verify whether the following are zeroes of the polynomial, indicated against them. (vi) $p(x) = lx + m, x = –\frac{m}{l}$
• Q3(vii): Verify whether the following are zeroes of the polynomial, indicated against them. (vii) $p(x) = 3x^2 – 1, x = –\frac{1}{\sqrt{3}}, \frac{2}{\sqrt{3}}$
• Q3(viii): Verify whether the following are zeroes of the polynomial, indicated against them. (viii) $p(x) = 2x + 1, x = \frac{1}{2}$
• Q4(i): Find the zero of the polynomial in each of the following cases: (i) $p(x) = x + 5$
• Q4(ii): Find the zero of the polynomial in each of the following cases: (ii) $p(x) = x – 5$
• Q4(iii): Find the zero of the polynomial in each of the following cases: (iii) $p(x) = 2x + 5$
• Q4(iv): Find the zero of the polynomial in each of the following cases: (iv) $p(x) = 3x – 2$
• Q4(v): Find the zero of the polynomial in each of the following cases: (v) $p(x) = 3x$
• Q4(vi): Find the zero of the polynomial in each of the following cases: (vi) $p(x) = ax, a \neq 0$
• Q4(vii): Find the zero of the polynomial in each of the following cases: (vii) $p(x) = cx + d, c \neq 0, c, d$ are real numbers.