(4√3 − 2√5)(3√10 + 5√6) simplify the expression show all work

Hello i need some with trigonometric substitutions. [tex]\int\limits^a_b {x} \, dx[/tex]

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

Four quarts of a latex enamel paint will cover about 200 square feet of wall surface. how many quarts are needed to cover 98 square feet of kitchen wall and 52 square feet of bathroom wall