Question

6. Evaluate:
298x298 – 205x205
(a)
93​

Answer 1

Answer:

298×298 - 205×205

298×298 = (298)²

and

205×205 = (205)²

So， (298)² - (205)²

this is in the form of a² - b²

a² - b² = (a + b) (a - b)

(298)² - (205)²

= (298 + 205) (295 - 205)

= 503 × 90

= 45270