Question

Pls ans friends PLS DONT SPAM

Answer 1

Answer:

a) use (a-b)(a+b) = a²- b²

  (80-2)(80+2)

  80² - 2²

  6400 - 4

  6396 (Ans)

b) use (x+a)(x+b)=x² + x(a+b) + ab

  (100+4)(100+3)

  100² + 100(4+3) + (4*3)

  10000+700+12

  10712 (Ans)

MARK IT A BRAINLIEST PLS!