Given the function f(x) = 2x^(2) + 3, find the value of x when f(x) = 53.

  1. Substitute f(x) = 53 into the equation given:f(x) = 53 = 2x2 + 32).

    2. Rearrange to get x2 on the left hand side: x2 = (53-3)/2 = 253).

    3. Square root both sides.

    Remember, the answer can be positive or negative:x = +5 or -5
EB
Answered by Emily B. Maths tutor

5049 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

The sides of a rectangle are x and (x+2), where x>0 the area of the rectangle is 8, what is the value of x?


Solve the equation 3x^(2)-7x+3 giving your answer to three significant figures.


Solve the following simultaneous equations. x^2+y^2=25. y-3x=13


How do you describe graph translations on x and y?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning