9a-4b-12a-5b
-3a-9b
Expand and simplify
7y(2y-2y2-4)
14y2-14y3-28y
Expand and simplify
(5x-3)(4x-7)
20x2-47x+21
Factorise
6y+30
6(y+5)
If g = -4 and h = -5, find the value of
g2h
-80
3+3x-6y+10-y+2x2
13-7y+3x+2x2
Expand and simplify
-2a(4b-7a+10a4)
-8ab+14a2-20a5
Expand and simplify
(5x-4)2
25x2-40x+16
Factorise
9a2-63a
9a(a-7)
If a = -2 and b = -3, find the value of
2g2-4h3
116
13m2n-7n2m+11nm2-9mn2
24m2n-16mn2
Expand and simplify
12(6t2-4)-3(3t-3t2)
81t2-9t-48
Expand and simplify
-3(3y-2)(y+9)
-9y2-75y+54
Factorise
-24mn2+36mn
-12mn(-2n-3)
If u = -2 and v = -3, find the value of
(uv)2-uv2
54
(7x-4)-(-2-3x)
10x-2
Expand and simplify
3d2(2d3-d)-2d(3d4+4d2)
-11d3
Expand and simplify
3-(2x-9)2
-4x2+36x-78
Factorise
-6xyz2-3xy2z+21x3yz
-3xyz(2z+y-7x2)
The conversion formula between Celsius and Fahrenheit is
F = 1.8C + 32
If F = 217.4, find the value of C.
103
Find the perimeter of the shape.
14x+12
Calculate the area of the shape.
3x-1
Find the area of the picture centred in the frame.
x2+10x-200
Factorise
3x(x+5)-7(x+5)
(3x-7)(x+5)
If 6x = 2y and z + x = y, express z in terms of x.
z = 2x