Question

simplify (1-2x)(1+2y) - (1-2y)(1+3y) and find its value where x is equal to 2 and Y is equal to 3

Answer 1

x=2, y=3
(1-2x)(1+2y)-(1-2y)(1+3y)
=(1-4)(1+6)-(1-6)(1+9)
=(-3)(7)-(-5)(10)
= -21+50
= 29

Answer 2

answer is 29 because (1-4)(1+6)-(1-6)(1+9)
(-3)(7)-(-5)(10)= -21+50=29