Would you like a lesson on completing the square?

Maths

Solve by completing the square.  X^2 +4x -21 = 

If you write y and z in terms of x (z= x+16 and y=x+38) you should easily be able to work out how many sweets are in which jar :)

5/8, 66% then 0.7

5/8 = 0.6125

66% = 0.66

If you would like a lesson on this, please let me know!

Would you like to book an online lesson and we can discuss how to calculate this?

(X-h)2 + (y-k)2 = r^2 is the equation for a circle if that helps? 

Try emailing this address: ask@scoodle.co.uk