Over a million students use our free study notes to help them with their homework
In order to simplify this equation, first we need to expand the two brackets.To expand 5a(4b - 3) we multiply 5a with each term inside the brackets. Answered by Sebastian-Stefan S. • Maths tutor11727 Views
Firstly, this is a classic GCSE question that crops up time and again, so it's worth making sure that you can expand brackets blindfolded and with your arms tied behind your back before you walk into t...
Firstly, to expand an equation like this, you must multiply the brackets by the number outside of the brackets. Make sure that you multiply every number inside the bracket by the number directly outsid...
Eq1: 3x + 4y = 17
Eq2: 4x + y = 14
Eq2 x 4: 16x + 4y = 56
Subtract Eq1 from this to isolate x: 16x + 4y - 3x - 4y = 56 - 17
Simplify: 13x = 39
A tin contains red, white and blue beads in the ratio red:white:blue = x:2x:x^2
First we should find the total number of beads in the tin:
x + 2x + x^2 = 3x + x^2
←
912
913
914
915
916
→
Internet Safety
Payment Security
Cyber
Essentials