Page 33 - CHAPTER 4 (Quadratic equations)
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CHAPTER 4
QUADRATIC EQUATIONS
Across
Values that can be represented on a number line
Degree two
Expressions separated by equal to sign
The value that determines the nature of roots
Down
Values that satisfies an equation
Mathematician who first gave us the formula for quadratic roots
Shape of a quadratic curve
Solutions
CHECKPOINT1:
(1). (i),(ii),(iv),(vii)
(2) a=-1 and b=1
(3) k=3/4
(4) x=1 is a root
(5) x=2 is a root but x= -(1/3) is not a root.
CHECKPOINT 2: CHECKPOINT 3: CHECKPOINT4:
(1) 23/8,-(23/8) (1) 16 (1) 34
(2) 4,-3 (2) 12,8 (2) 16
(3) √3, √3 (3) Imaginary and distinct (3) 10,5
a
b
(4) ,- (4) k=±3 (4)Rs 80 or Rs 20
b c
(5) x=-(1/6) ( 5) k< 1, k∈
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