Question

Use the product of a sum and a difference to evaluate the expression. 43x37=

Answer 1

(40+3)(40-3)

Answer 2

40^2-3^2
1600-9=1591

Answer 3

\[\Huge{\color{red}{(a+b)(a-b)=a^2-b^2}}\]\[\Huge{\color{green}{43 \times 37=(40+3)(40-3)}}\]\[\Huge{\color{blue}{(40)^2-(3)^2}}\]

Answer 4

\[\Huge{\color{purple}{1600-9=1591.}}\]