Question

Work out the value of y when a = 6.5 and b = 3.5, given that y = ( a + b ) ( a - b )

Answer 1

30

Explanation:

y = ( a + b ) ( a - b )

Let a = 6.5 and b = 3.5

y = ( 6.5 + 3.5 ) ( 6.5 - 3.5 )

Simplify the terms in the parentheses.

y = (10)(3)

y= 30