3x² = 75 Find the value of x.
First Simplify the numbers we know. Therefore we get: x2=75/3 which is the same as x2=25
Now find the square root of 25, which is 5 or -5. Therefore x=5 or -5
DB
Related Maths GCSE answers
All answers ▸A ship is 180 kilometres away from a port P on a bearing of 63 degrees. Another ship is 245 kilometres away from port P on a bearing of 146 degrees. Calculate the distance between the two ships.
What is Pythagoras's theorem?
How do you complete a square
Solve the inequality 5x + 3 ≤ 3x − 6.