(x2 - y2) × (x2 + y2) = ______
  • 2x2 + 2y2
  • x4 - y4
  • x4 + y4
  • 2x4
Using identity find 201 x 199
  • 3000
  • 3999
  • 39999
  • 31111
Find 872 - 132
  • 7200
  • 7300
  • 7400
  • 7500
Find (102)2 - (98)2
  • 200
  • 400
  • 600
  • 800
The square of x2 - 2y2 is ______
  • x4 - 4x2y2 + 4y4
  • x4 + 4x2y2 + 4y4
  • x4 - 4x2y2 - 4y4
  • None of the above
(x−5)(x−6)
  • x2-11-30
  • x2-11+30
  • x2+11-30
  • x2+11+30
(a−5)(2a−9)\left(a-5\right)\left(2a-9\right)(a−5)(2a−9) is of the form
  • (a+b)(a−b)\left(a+b\right)\left(a-b\right)(a+b)(a−b)
  • (a+b)2\left(a+b\right)^2(a+b)2
  • (x+a)(x+b)\left(x+a\right)\left(x+b\right)(x+a)(x+b)
  • none of these
z2 +(c + d)z + cd
  • ( x + a) ( x + b)
  • (z + a) (z + b)
  • (z + c) (z + d)
  • (x + c) (x + d)
The product of 93x99 is
  • 9207
  • 9000
  • 8250
  • 8976
(x - 8) ( x - 8) = ______
  • x2 - 64
  • x2 + 64
  • x2 - 16x + 64
  • x2 + 16x + 64
Add (a - b - c) ; (b - a - c) and (c - a - b)
  • (a - b - c)
  • (- a - b - c)
  • (a + b - c)
  • (-a - b + c)
What is the product of this monomial and polynomial ?3xy ( 7z + 2z2 + x + yx)
  • 21xyz + 3x2y + 6xy2z + 3x2y2
  • 3x2y2 + 6xyz2 + 3xy2 + 21xyz
  • 6xy2z + 21xyz + 3xy2 + 3x2y2
  • 3x2y + 3x2y2 + 6xyz2 + 21xyz
The length of a rectangle is decreased by 3 and breadth is increased by 4. The new area of the rectangle found after changing it's dimensions is same as that of original rectangle before any changes were made.Which among below is a correct equation ?Consider length of rectangle to be 'l' and breadth of rectangle to be 'b'
  • 4l + 3b = 12
  • 3l - 4b = 12
  • 4l - 3b = 12
  • 3l + 4b = 12
The simplified form of the expression (y2 + 5)(y2 - 3) is
  • y4 - 3y2 - 15
  • y4 + 2y2 + 15
  • y4 - 3y2 + 15
  • y4 + 2y2 - 15
Find the product of (2x - 3y)(2x + 5y) using suitable identity.
  • x2 + 4xy - 15xy
  • 2x2 + 4xy - 15xy
  • x2 - 15xy - 15xy
  • 2x2 - 6xy - 15xy
Simplify the following product (zx - y)(zx + k) using suitable identity.
  • z2x2 + (y - k)zx - ky
  • z2x2 + (k - y)zx - ky
  • z2x2 + (k - y)zx + ky
  • z2x2 + (y - k)zx + ky
If a + b = 5 and ab = 6, find a2 + b2.
  • 13
  • 12
  • 10
  • 11
Expand (4x − 5)(4x + 5).
  • 4x2 − 25
  • 4x2 + 25
  • 16x2 + 25
  • 16x2 − 25
Expand (x−4)2.
  • x2 −8x+16
  • x2 −8x−16
  • x2 +8x+16
  • x2 −16
Solve (x - 1)(1 - x) using suitable identity
  • - x2 + x - 1
  • - x2 - 2x - 1
  • - x2 + 2x - 1
  • - x2 - x - 1
0 h : 0 m : 1 s

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