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Substitution

Class 9 Mathematics के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

MathematicsIf substituting (x=3) in (2x^2+kx-15) gives (0), what is (k)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 23Expert MathematicsIf (x=1) and (y=-3), what is the value of (2x^2-xy+y^2)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 23Expert MathematicsIf (m=3) and (n=-2), what is the value of (m^2n-2mn^2)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 23Expert MathematicsIf (x=-2), what is the value of (3x^3-2x^2+5x-1)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 23Expert MathematicsIf (x=2), what is the value of (x(x+5)-3(x-1))?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf (x=1), what is the value of (6x^3-9x^2+4x-8)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf (x=1) and (y=3), what is the value of (3(x+y)^2-4xy)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf \(q=4\), what is the value of \(\frac{q^3-2q}{4}\)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf (p=-1), what is the value of (2p^4-3p^3+4p^2-5)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf (t=3), what is the value of (2t^4-5t^3+t^2)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf (x+y=8) and (x-y=2), what is the value of (4(x+y)-5(x-y))?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf (s=2) and (t=-1), what is the value of (s^3t-st^3+2t)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf (x=0), what is the value of (-4x^3+9x^2-5x+13)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf (m-n=9), what is the value of (2m-2n+11)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf (u=2) and (v=-5), what is the value of (u^2v+uv^2-3u)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf \(x=6\), what is the value of \(\frac{x^2-3x+6}{3}\)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf (a+b=12) and (ab=20), what is the value of (4(a+b)-3ab)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf (r=-3), what is the value of (2r^3+5r^2-4r)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf (p=3) and (q=-2), what is the value of (p^2q-2pq^2+q)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard MathematicsIf (x=-4), what is the value of (3x^2+2x-7)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 25Hard