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 ▸

Solve 5x + 3 = 45


Solve: 3X - 5 = Y 2X +2 = Y +3


Given a circle with the equation y^2 + x^2 = 10, with a tangent that intersects at point P, where x=1, find the coordinates for the point at which the tangent meets the x axis (Q).


Dominik hires a satellite phone. His total hire charge is £860. For how many weeks did he hire the phone? (Total hire charge = No. of week X 90 +50)