e)(2y - √3 )(y+1) f)(a+√2)(a - √3) g)(2√2 + k )(√2 - k )

e)(2y - √3 )(y+1)=2y²+2y-√3y-√3=2y²+y(2-√3)-√3 f)(a+√2)(a - √3)=a²-√3a+√2a-√6=a²-a(√3-√2)-√6 g)(2√2 + k )(√2 - k )=4-2√2k+√2k-k²=4-√2k-k²