Simplify:
(1) 2+(−4)−(+3)
(2) −5+4−(−2)
(3) 10+(−5)−(−4)
(4) 12−(+6)+(−3)
(5) −15+(−4)−(+3)
Write the squares of:
(1) 3
(2) −5
(3) +4
(4) −2
(5) +6
(6)
(7)
(8)