Find the value of: `-21+(-9)+63+(-22)+(-228)+137`

Find the value of i^(63) .

Find the value of k in (26)/(21) : (24)/(9) :: k : (14)/(13)

Find the least value of (6x^(2)-22x+21)/(5x^(2)-18x+17) for real values of x.

9.Find the value of "(19^(@)+20^(@)+21^(@))/(22^(@)+23^(@))

Find the product of: (-22)/( 11) and (-21)/( 11)

Find the value of 9 + 10 + 11 + 12 + … + 21.

Find the value of [(sin^(2)22^(@)+sin^(2)68^(@))/(cos^(2)22^(@)+cos^(2)68^(@))+sin^(2)63^(@)+cos63^(@)sin27^(@)]

Find the least value of ((6x^(2)-22x+21))/((5x^(2)-18+17)) for real x

Find the least value of ((6x^2-22 x+21))/((5x^2-18+17)) for real xdot

Find the value of 2.1 + 2.25 div [ 63 - {7.5 xx 8 + (13- 2. 5 xx 5) }].