Powerful quadratics

Source: nrich
Find all real solutions to

Show answer


Show me a random puzzle
 Most recent collections 

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

List of all puzzles


fractions multiples rugby wordplay numbers christmas products area folding tube maps sum to infinity odd numbers perimeter routes integers chess coordinates the only crossnumber 2d shapes trigonometry median dates balancing crosswords people maths multiplication squares volume books polygons indices speed palindromes unit fractions shape cube numbers chalkdust crossnumber division rectangles sequences graphs means probability chocolate shapes addition averages triangle numbers regular shapes factors remainders colouring geometry tiling prime numbers digits crossnumber doubling gerrymandering time planes hexagons mean elections games irreducible numbers advent lines money ave percentages 3d shapes triangles integration perfect numbers functions scales arrows star numbers floors factorials angles dodecagons circles taxicab geometry cards spheres algebra square roots symmetry number dominos bases complex numbers sums probabilty parabolas grids partitions pascal's triangle surds square numbers proportion clocks crossnumbers quadratics coins differentiation digital clocks dice calculus logic menace ellipses range cryptic crossnumbers cryptic clues sport


Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2020