Solve x^2 + 10x - 3 = 0
completing the square (x+5)2 -25 -3 =0 (x+5)2 -28 = 0 (x+5)2 = 28 x= ±2√7 -5
IH
Related Maths GCSE answers
All answers ▸How do I rearrange and make y the subject in equations such as "(y/4) - X = 1"?
Ian's commute to work is 5km. He needs to be there by 9.00am. He travels at 10 km/h, what time does he need to leave home?
Given that a = 3 and b = 7 , What is the value of 2a + b ?
Write 16× 8^2x as a power of 2 in terms of x.