Multiply
(a + 1)(3a - 5)
3a^2 - 2a - 5
(-10x^3y)(3x^2y^4) + (5x^3y^2)(-4x^2y^3)
-50x^5y^5
18x2 + 7xy+ 8
2
(x3 + x2 + x + 1)(x - 1) + x3(x - 1)
2x4 - x3 - 1
If a + b = 1, ab = - ¾, find the value of (a + 2) (b + 2)
5 1/4
(4p - 7q)^2
16p^2 - 56pq + 49q^2
8x(x2 - 2) - 3(2x2 + 1)
8x3 - 6x2 - 16x - 3
25x3y + 15x2 + 9
4
Solve:
(x + 3)2 - (x - 2)2 = 55
x = 5
If a + b = 1, ab = - ¾, find the value of (a - 3) (b - 3)
5 1/4
(y + 7) (y - 7)
y^2 - 49
4a(6a - b) - 3(2a + 3b) - 5(a - 3)
24a2 - 11a - 4ab - 9b + 15
19x2 + 7x - 19x2 + 5x
1
(4x2 + 3x - 1)2 + (3x + 1)(2x - 3)
16x4 + 24x3 + 7x2 - 13x - 2
A poster is 25 cm taller than it is wide. It is mounted on a piece of cardboard so that there is a 5 cm border on all sides. If the area of the border alone is 1350 cm2, what are the dimensions of the poster?
50 cm by 75 cm
(x + y + z)(x + y - z)
x2 + 2xy + y2 - z2
(7x2 - 3x - 2) - (x2 - 7x - 15)
6x2 + 4x + 13
8x4y2 + 7x2y3 + y4
6
(a + b)3
a3 + 3a2b + 3ab2 + b3
If (x - y)2 = 50 and x2 + y2 = 20, find the value of (x + y)2
-10
(5x - 2)(3x + 1)(x - 4)
15x3 - 61x2 + 2x + 8
2s2 - [(s3 - 4s + t) - (s3 - 8s + 5t)]
2s2 - 4s + 4t
4
Solve:
(2x - 3)(x + 3) = (x - 3)2 + (x + 3)2
x = 9
Find the value of (x+y)2 if x2 - y2= -12 and y - x = 2
36