Factorize -4h² + 81

  • (9 + 3h)(9 - 3h)
  • 16h - 45
  • (9 + 2h)(9 - 2h)
  • None of above

Factorization of 4x - 20 yields

  • 2x - 4
  • 4(x - 5)
  • 5(x - 4)
  • 20x

Factorization of x + xy + 2y + 2y² gives

  • x² + 2xy
  • x + y
  • (1 + y)(x + 2y)
  • None of above

The two positive numbers differ by 5 and square of their sum is 169 are

  • 2,4
  • 5,6
  • 4,9
  • 3,7

Factorize 2x²y² + 5xy - 12

  • 3xy - 12x + 9y
  • (2xy - 3)(xy + 2)
  • 4y - 3xy
  • (2xy - 3)(xy + 4)

(a + 2b)² - (a + 2b)(3a - 7b) by factorization gives

  • (a + 2b)(9b - 2a)
  • a - 3b + 4ab
  • 5b - 4a
  • None of above

39² + 78 + 1 using algebraic identities gives

  • 1200
  • 1700
  • 500
  • 1600

The whole number such that twice of its square added to itself gives 10

  • 5
  • 2
  • 8
  • 10

Expansion and simplification of 8(3h - 4) + 5(h - 2) gives

  • 24h - 37
  • 36 - 4h
  • 29h - 42
  • 38 + 42h

Factorization of 103²-9 yields

  • 10300
  • 10600
  • 11250
  • 12500

(a + b)² gives

  • a² - b²
  • a² + 2ab + b²
  • a + 2b
  • a - 2b

Expansion of -8(3a + 5b) yields

  • -24a - 40b
  • -22a + 80b
  • 20a - 30b
  • -24a - 41b

The perimeter of rectangle is 20cm and area is 24cm² the length and breadth are

  • 6cm and 4cm
  • 8cm and 6cm
  • 12cm and 10cm
  • 7cm and 5cm

Expansion of (x + 3y)(x - y) gives

  • x² + 2xy - 3y²
  • x + 3y - 2xy
  • -2y + 3x
  • 3y - 42x

9a² - 4 gives

  • (3a + 2)(3a - 2)
  • 9a + 12
  • (4a + 13)(4a - 13)
  • 54a - 32

Factorize x² + 8x + 12

  • (x + 2)(x + 6)
  • (x + 3)(x + 4)
  • 3x + 12
  • 3x - 12

If x=3 is solution of x² + kx + 15, the value of k is

  • k = -8,x = 5
  • k = 8, x = 3
  • k = 6, x = 5
  • None of above

Expansion of 2x(x + 2y) + 3x(2x - 3y) yields

  • 8x² - 5xy
  • 8x - 5y
  • 3y - 2y
  • none of above
0 h : 0 m : 1 s

Answered Not Answered Not Visited Correct : 0 Incorrect : 0