find the value of A and B if root 7 minus 2 by root 7 + 2 equals to A root 7 + B
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Answered by
10
Step-by-step explanation:
√7-2/√7+2=A√7+B
√7-2=(A√7+B)(√7+2)
√7-2=7A+2A+B(√7+2)
√7-2=9A+B(√7+2)
comparing
A=√7/9
B=-2/√7+2
Answered by
6
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