REVISION CLASS 10TH

 $Equation\ ax^2+bx+c=\ 0\ has\ equal\ roots\$  Roots

•  $b^2-4ac>0$  

•  $b^2-4ac=0$  

•  $b^2-4ac<0$  

•  $None$  

Product of two consecutive number is 72 than numbers are

• 4,18

• 8,9

• 6,12

• 3,24

if a,b,c are in A.P. than

• b=a+c

• 2b=a+c

• $b\sqrt{ac}$

• b=ac

A.P. 2,4,6,--- Find the sum of 10 terms

• 110

• 120

• 125

• 100

 $n^{th}\$  term of AP is a+(n-1)d

• true

• false

Sum of the all odd number between 0 to 50 is 625

• 620

• 625

• 600

• 400

In the quadratic formula, if b²-4ac>0, then the quadratic equation has

• two imaginary solutions
• two different real solutions
• two equal real solutions
• none of these

Tags

CCSS.HSA-REI.B.4B

In the quadratic formula, the expression
b²-4ac is called

• discrim
• determinant
• discriminant
• none of these

Tags

CCSS.HSA-REI.B.4B

The solution of the quadratic equation
4x²-5x-9=0 are

• x=-1 or x=9/4
• x=1 or x=9/4
• x=2 or x=3
• x=-2 or x=-3

Tags

CCSS.HSA-REI.B.4B

The graph of a quadratic function is called

• a line
• a hyperbola
• a parabola
• a cubic

Tags

CCSS.HSF-IF.C.7A