Solve x^2+10x+5=0 using completing the square.
Completing the square is one of the 3 common ways to solve a quadratric equation (other two being factorising and using the quadratic formula).Using completing the square method, you manipulate the first two terms (x2+10x). This is done by putting these two in a bracket and squaring the bracket. First you divide the 2nd term (10x) by 2 and and create a bracket so that it is (x+5When you expand thi s
VV
Related Maths GCSE answers
All answers ▸Sam and Jack share out £80 in the ratio 5:3, in that order. How much do they each get?
Draw the graph for y = x^2 + 4x +2
A linear sequence starts, a + 2b, a + 6b, a + 10b …….. …….. The 2nd term has value 8. The 5th term has value 44. Work out the values of a and b
Emma has a digital photo. The photo has width 960 pixels and height 720 pixels. Write down the ratio of the width of the photo to the height of the photo. Give the ratio in its simplest form.