Question

find x if 14x =47 square - 33 square by using identity asquare -b square =a+b a-b​

Answer 1

Answer:

We will solve it by using a^2 - b^2 identity.

$14x = (47) {}^{2} - (33) {}^{2} \\ = > 14x = (47 + 33)(47 - 33) \\ = > 14x = 80 \times 14 \\ = > 14x = 1120 \\ = > x = \frac{1120}{14} = 80$