7+3√5÷7-3√5=a+b√5
What are the values of a and b
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Answer:a=23.5 b=10.5
Step-by-step explanation:
7+3√5÷7-3√5=a+b√5
(7+3√5)(7+3√5)÷(7-3√5)(7+3√5)
(7+3√5)²/7²-(3√5)²
(7+3√5)²/49-45
49+45+42√5/4
94+42√5/4
94/4+42√5/4
23.5+10.5√5
a=23.5 b=10.5
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