Complete the square of X^2 + 4X - 12

X^2 + 4X - 12X^2 + yX + z(x + a)^2 + ba = y/2a = 4/2 = 2b = z - a^2b = -12 -2^2 = -16Therefore: x^2 + 4x - 12 = (x+2)^2 - 16

Answered by Anastasia R. Maths tutor

2071 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

The price of a pencil grows by 1%. What is the final crice if the initial price was £1?


There are 5 girls, 6 boys and some adults in a classroom. The probability that a girl is chosen is 1/3. What is the probability of an adult being chosen?


Rearrange the following equation to make 'm' the subject: 4 (m - 2) = t (5m + 3) [4 marks]


n is an integer greater than 1. Prove algebraically that n^2 – 2 – (n – 2)^2 is always an even number.


We're here to help

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