M l aggarwal understanding icse mathematics class 9 Solutions for Chapter 7 quadratic equations

Exercises in Chapter 7 quadratic equations Grade 9

Quadratic Equations Exercise 7

Questions in Quadratic Equations Exercise 7

$\text { (i) } x^{2}-11 x+30=0$ $\text { (ii) } 4 x^{2}-25=0$

$\text { (i) } x^{2}-11 x+30=0$

$\text { (ii) } 4 x^{2}-25=0$

$\text { (i) } x(2 x+5)=25$

(ii) (x + 3) (x – 3) = 40

$\text { (i) } 4 x^{2}+4 x+1=0$

$\text { (ii) }(x-4)^{2}+5^{2}=13^{2}$

$\text { (i) } 21 x^{2}=4(2 x+1)$

$\text { (ii) } 2 / 3 x^{2}-1 / 3 x-1=0$

(i) (x - 1)/(x + 1) = (2x - 5)/(3x - 7)

(ii) 1/(x + 2) + 1/x = ¾

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Chapters in this book

Rational and Irrational Numbers

Compound Interest

Simultaneous Linear Equations

Problems on Simultaneous Linear Equations

Quadratic Equations

Mid Point Theorem

Pythagoras Theorem

Rectilinear Figures

Theorems on Area

Trigonometric Ratios

Trigonometric Ratios and Standard Angles

Coordinate Geometry

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