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India
Class IX

Solve by trial and improvement

Interactive practice questions

Consider the equation $x^2=61$x2=61.

a

Complete the gaps to determine between which two consecutive whole numbers $\sqrt{61}$61 lies.

$\editable{}$ < $\sqrt{61}$61 < $\editable{}$.

b

Is $61$61 closer to $49$49 or $64$64?

$49$49

A

$64$64

B
c

Hence, determine which is the better approximation for the positive value of $x$x.

$7$7

A

$7.75$7.75

B
Easy
1min

Consider the equation $x^3=13$x3=13.

Easy
1min

Consider the equation $x^3-272=0$x3272=0.

Easy
2min
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Outcomes

9.A.P.1

Definition of a polynomial in one variable, its coefficients, with examples and counterexamples, its terms, zero polynomial. Degree of a polynomial. Constant, linear, quadratic, cubic polynomials; monomials, binomials, trinomials. Factors and multiples. Zeros/roots of a polynomial/equation.

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