Sandra was simplifying 45√×23√ , and she ended up with 815−−√ as her simplified answer. Is Sandra correct? If she is not correct, what was her mistake? Responses Sandra's simplified answer is correct. Sandra's simplified answer is correct. Sandra's answer is not correct. She should have multiplied 4 times 5 in the first radical and multiplied 2 times 3 in the second radical to get a final answer of 26. Sandra's answer is not correct. She should have multiplied 4 times 5 in the first radical and multiplied 2 times 3 in the second radical to get a final answer of 26. Sandra's answer is not correct. She should have added the coefficients to get 615−−√ . Sandra's answer is not correct. She should have added the coefficients to get 6 square root of 15. Sandra's answer is not correct. She could continue to simplify the radical to get 245√