Expanding
Brackets
Brackets
Expand 3x(x - 4y)
3x2 - 12xy
Factorize 3m + 15mn2 - 9nm2
3m (1 + 5n2 - 3nm)
If m = 0.5, x= 3, and y= 2, find the value of -3x + my
-8
Why don’t mummies take vacations?
They’re afraid to relax and unwind.
If the area of a triangle is represented by A = bh/2, rearrange the equation to solve for b.
2A/h = b
Expand and simplify 5a2 - a(1 + 2a)
3a2 - a
What are possible dimensions of a rectangle that has an area of 6xy + 42x
6x by y+7
What has a face and two hands, but no arms or legs?
A clock.
Construct the expression for the area and the perimeter of a rectangle that has the side lengths 5x-4 and 3.
Area: 15x-12
Perimeter: 10x-2
What do snowmen call their kids?
Chill-dren
x2 + 4x -21
What kind of room has no doors or windows?
A mushroom.
If m = -2, y = 5, and x = 3, find the value of 35(mx -y)
-385
Write down the expression for the shaded area in the shape projected.
9x+84
x = (w(y-z))/v
w = (xv)/(y-z)
Expand and simplify (3 + x)(3 - x)
9 - x2
Factorize x2 - 8x + 12
(x-2)(x-6)
What is the volume of a sphere that has a radius of 4cm? Round your answer to two decimal points. Remember, the formula for the volume of a sphere is
V = (4 x pi x r3)/3
268.08 cm3
Construct the expression for the area and the perimeter of a rectangle that has the side lengths 3x+8 and 2x-4.
Area: 6x2+4x-32
Perimeter: 10x+8
Rearrange the formula to make x the subject
T = 2x3 - 4y
x = cubed root of (T + 4y)/2
Name the first 5 digits of pi.
3.1415
Factorize x2 - 49
(x+7)(x-7)
If A = (pi x b2) - (pi x c2), find A when b = 0.2 and c = 0.5. Round your answer to two decimal places.
-0.66
Construct the expressions for the area and perimeter of the following shape projected.
Area: (18x2+5x-3)/2
Perimeter: 16x+6
If A = (B/C) + DE, rearrange the formula to solve for D first, then rearrange again to solve for C.
D = (A - (B/C))/E
C = B/(A - DE)