3Complete the square x2+4x−5=0(x+2)2−9=0(x+2)2=9x+2=±√9x=3−2=1x=−3−2=−5x2+4x−5=0(x+2)2−9=0(x+2)2=9x+2=±9x=3−2=1x=−3−2=−5 Step-by-step guide: Completing the square 4Graphically x2+4x−5=0x2+4x−5=0 The solutions/roo...
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A Level Maths Looking for free GCSE or IGCSE Maths help? We have a collection of videos lessons, past papers and worksheets that are suitable for GCSE Maths or IGCSE Maths. Share this page to Google Classroom These compilations of lessons cover concepts that you will need to know for the ...
GCSE Maths Tutor- a free resource for aspiring mathematicians. Yes you can improve your grades!But only by hard work. There are no quick fixes. Carefully read the notes and watch the videos. It is also important to get lots and lots of practice. So use the worksheets and exam papers. T...
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Add up the numbers of the ratio to give the total number of 'parts'. Make fractions of each ratio number divided by the number total. In turn, multiply each fraction by the number that is to be divided up.Example #1 - Divide 90 in the ratio 3 : 2...