Question

Determine the product of (i) (-25) × (-9)

Answer 1

Answer:

= (-25) × (-9)

= (-5)^2 × (-3)^2

= Using, (a)^2 × (b)^2 = (a×b)^2+2

= (-5 × -3)^2+2

= (15)^4

= 50625

Here is your answer....