How do we complete the square with questions involving a number stuck with the x-squared?

Let me show you an example:Complete the square for the following equation....4x2+ 8x - 91) Divide the whole equation by 4, as this is the easiest way to make things simple. It allows us to complete the square in a much simpler format.(4x2+ 8x - 9) / 4 = x2+ 2x - 9/42) With this equation, complete the square.x2+ 2x - 9/4 —> (x+1)2-9/4-1 = (x+1)2-13/43) Now simply multiply all components by 4, to get the final answer.( (x+1)2-13/4 ) x 4 = 4(x+1)2 - 13The final answer to this tricky question is 4(x+1)2- 13 :)

DS
Answered by Dhruv S. Maths tutor

2531 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

What is a surd? How would you go by simplifying a surd?


How do I simplify the following equation x^2+5x+6


In a village the number of houses and the number of flats are in the ratio 7 : 4 the number of flats and the number of bungalows are in the ratio 8 : 5 There are 50 bungalows in the village. How many houses are there in the village?


y=6x+9 , 3y-18x+9=0 Are these lines parallel?


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