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 equations 2x+y=9 and x+2y=6 to find x and y.
Show that (x + 1)(x + 2)(x + 3) can be written in the form ax3 + bx2 + cx + d where a, b, c and d are positive integers.
x^2+2=18, find the value of x.
What is the probability of picking a red ball twice from a bag of 6 blue balls and 3 red balls, without replacement.