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


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


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