Solve by completing the square: x^2 - 8x + 12 = 0
x2 - 8x + 12 = 0 (x - 4)2 - 16 + 12 = 0 (x - 4)2 - 4 = 0 (x - 4)2 = 4 x - 4 = +- 2 x = 6 x = 2
JV
Related Maths GCSE answers
All answers ▸A perfect sphere of lead has radius 6 cm, and weighs 1710 grams. What is its density? Give your answer in g/cm^3. [Density = mass/volume]
Rearrange the following making a the subject: (a+2)/5 = 3a+b
How would you work out the length of an hypotenuse, if the length of the opposite side is 3 cm and the length of the opposite side is 4 cm?
A circle C1 has a centre at (3,0) and a radius 8. A second circle C2 has a centre (x,0) and radius 6. Given the radii of the 2 circles meet at right angles. Find x