Find the value of : ` 4-7+(-5)-(-3)+5`

Find the value of : 7+(-5)+(-6)

Find the value of 1) . (-15)+4-:(5-3) 2) . (-40)xx(-1)+(-28)-:7

Find the value of: (-5)-:3/7

Find the value of : 11-9+5-6-3+7

If Δ is an operation on integers such that for integers a\ a n d\ b ,\aΔb=a-b-(-5) Find the value of (i) (-7)Δ3 (ii) (-9)Δ(-4) (iii) 2Δ5 (iv) 4Δ(-5)

Find the value of : 2x^(4)-5x^(3)+7x-3 where x=-3

Find the values of :- (i) 2^(4) (ii) 4^(3) (iii) 3^(2) (iv) 5^(3) (v) 9^(4) (vi) 7^(3)

Find the value of : 4x^(3)-5x^(2)-6x+7 when x=3

Find the value of the (5^(4)xx7^(5))/(5^(2)xx7^(4))

Find the value of m and n : if : ( 5+ 2sqrt3)/( 7+ 4sqrt3) = m + n sqrt3