(i)((-4)/(5))^(3)

Expand : (i) (4a-5b)^(3) " " (ii) (a+2b)^(3)

Expand : (i) (4a-5b)^(3) " " (ii) (a+2b)^(3)

Simplify and express each of the following in the form (a + ib) : (i)" "((5)/(-3+2i)+(2)/(1-i))((4-5i)/(3+2i))" "(ii)" "((1)/(1-4i)-(2)/(1+i))((1-i)/(5+3i))

The value of cos phi is (i) (5)/(4) (ii) (5)/(3)( iii) (3)/(5) (iv) (4)/(5)

Express (1)/(4-5i) in the form of a+ib(i)(4+i5)/(41)(ii)(3+i4)/(41)(iii)(2+i3)/(41) (iv) (2-i3)/(41)

Evaluate : (i) (2)/(3)-(4)/(5)

Prove that the value of the determinant |{:(-7,,5+3i,,(2)/(3)-4i),(5-3i ,,8,,4+5i),((2)/(3) +4i,,4-5i,,9):}|" is real "

Prove that the value of the determinant |{:(-7,,5+3i,,(2)/(3)-4i),(5-3i ,,8,,4+5i),((2)/(3) +4i,,4-5i,,9):}|" is real "

Prove that the value of the determinant |{:(-7,,5+3i,,(2)/(3)-4i),(5-3i ,,8,,4+5i),((2)/(3) +4i,,4-5i,,9):}|" is real "