Try another version of this question Simplify: `4 sqrt(21) * 5 sqrt(42)` (entry tip: to type type "5sqrt(3x)" - no quotes) Get help: VideoBox 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)Enter DNE for Does Not Exist, oo for Infinity `420 sqrt(2)`
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Get help: Video
Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)Enter DNE for Does Not Exist, oo for Infinity