Work out the value of 2a^2 + b^3 when a = 5 and b = –3

To work out the values you need to sub in a and b into the equation, giving you: 2(5)2 + (-3)3 From this we use the rules of BODMAS to first complete the orders and obtain: 2*25 + (-27). Again using BODMAS we multiply 2 by 25: 50 + (-27). Lastly we subtract 27 from 50 as a + and negative together gives a negative: 50 - 27 = 23.

Answered by Kyle M. Maths tutor

4935 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Kelly is trying to work out the two values of w for which 3w-w^3=2. Her values are 1 and -1. Are her values correct?


what is 64 to the power of 2/3?


How to find the gradient of a line?


How do you calculate the area of a triangle when the question tells you the length of all three sides but no angles?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences