Matemáticas

Matemáticas

1. Polynomials

   • Subtraction
     • To subtract you must operate two by two and organized them by like terms
   • Multiplication
     • You must multiply each term by each term of the polynomial,.
   • Addition
     • To add the polynomials you must organized them by like terms
   • Division
   • Degree
     • It is the greatest exponent that a variable has

2. Divisibility rules

   • By 2: when it ends in 0,2,4,6,8,
     • Example: 14, 20, 18, 2, 30...
   • By 3: if the sum of its digits is multiple of 3
     • Example: 96, 1011, 75 ,81...
   • By 4: if it ends in 2, 0 or the last 2 digits are divisible by 4
     • Example: 7,100, 924, 332, 228...
   • By 5: if it ends in 0 and 5
     • Example: 570, 735, 15 , 20, 330...
   • By 6: if it is divisible by 2 and by 3
     • Example: 510, 168,...
   • By 7: if the difference between the number without the digits of the units and the double are multiple of 7
     • Example: 3934, 826...
   • By 8: if the last 3 digits are 8 or multiple of 8
     • Example: 46,000, 2648,7 ,120...
   • By 9: if the sum of the digits are multiple of 9
     • Example: 56124, 549...
   • By 10,100,1000: if the last digit is 0
     • Example: 1,470, 730, 27,000...

3. Formulas

   • Difference of squares
   • Binomial cubed
   • Binomial squared