second binomial formula problem 1
You can solve the following math problem here: second binomial formula problem 1
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The second binomial formula is an important formula in mathematics!
Calculate the following binomials formulas:
a) (7s – 13t)² =
b) (- 2x + 9y)² =
a) answer:
(7s – 13t)² =
a² – 2ab + b²
(7s • 7s) – (2 • 7s • 13t) + (13t • 13t) =
49s² – 182st + 169t²
b) answer:
(– 2x + 9y)² =
a² – 2ab + b²
(-2x • -2x) – (2 • – 2x • +9y) + (9y • 9y) =
4x² – 36xy + 81y²
More exercises:
- third binomial formulas problem 1
- second binomial formulas problem 2
- first binomial formulas problem 2