Find the value of a and b if 4+✓5/4-✓5= a+b✓5
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Answer:
∴a=21/9
∴b=8/9
Step-by-step explanation:
4+√5/4-√5
RATIONALISE THE DENOMINATOR
[4+√5/4-√5][4+√5/4+√5]
(4+√5)²/16-5
16+5+8√5 /9
21+8√5 /9
21/9+8/9√5
∴a=21/9
∴b=8/9
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