I've been working on these problems for a little over an hour and i can't for the life of me figure out how to do them. Can someone walk me through these? Hopefully I'll start to get the hang of it. 1.) (2 √15)(4 √21) 2.) 3∛128+5∛16 3.) √(50x4) These depend on the directions instructing to keep in simplest radical form
or take to a decimal. These answers will be in simplest radical form. 1.) (2√15)(4√21) = 8√315 {multiply} = 8√9 √35 {depending on the directions whether to take to a decimal or not} = 8(3)√35 {square root o{f 9 is 3} = 24√35 {multiply} 2.) 3∛128+5∛16 ==3∛64 ∛2) + 5∛8 ∛2 {break down the cube roots again directions dependent} = 3(4)∛2 {cube root of 64 is 4} = 12∛2 {multiply 3 by 4} 3.) √50x4 =√25x4√2 {group the perfect squares together under one square root sign} = 5x2√2 {take the square root of 25x4}  Algebra House
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