Question

factorise the value using expansion formulae

a) (602×598)

b) (103^2)

Answer 1

1. (600+2) (600-2)

$( {600}^{2} ) - {2}^{2}$
360000-4
= 359996
Hope this helps you

Answer 2

a). (602 * 598 )

= (600+2*600-2)
= (a²-b² = (a+b)(a-b))
= [(600² - 2²]
= (360000-4)
=. 359996



b). 103²
= (100+3)²
(a²+b²) = a²+ 2ab + b²
= 100² + 2(100)(3) + 3²
= 10000 + 600 + 9
= 10609

Hope helped!!!

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