2.)(4−2x)(4+2x)

=(4+−2x)(4+2x)

=(4)(4)+(4)(2x)+(−2x)(4)+(−2x)(2x)

=16+8x−8x−4x2

=−4x2+16

3.)(2x+3y+5)(2)

=(2x+3y+5)(2)

=(2x)(2)+(3y)(2)+(5)(2)

=4x+6y+10

4.)(2x+5)(2)

=(2x+5)(2)

=(2x)(2)+(5)(2)

=4x+10

godbless

goodluck