3+√7/3-√7=a+b√7 solve step by step
Answers
Answered by
2
3+√7 × 3+√7 =[3+√7]² = 3²+2×3×√7+(√7)² 9+6√7+7 16+6√7 16 √7
------- -------------------- ------------------------ = -----------------= -------------= -------+ ----
3-√7 × 3+√7 =3²-(√7)² = 9-7 2 2 2 2
= 8+3√7
a+b√7
a=8;b=3
------- -------------------- ------------------------ = -----------------= -------------= -------+ ----
3-√7 × 3+√7 =3²-(√7)² = 9-7 2 2 2 2
= 8+3√7
a+b√7
a=8;b=3
Answered by
15
ⓗⓔⓨ ⓕⓡⓘⓔⓝⓓ
ⓗⓔⓡⓔ ⓘⓢ ⓨⓞⓤⓡ
ⓐⓝⓢⓦⓔⓡ
===================================
solving by rationalising the denominator:-
=>
=> so,
@ Prabhudutt
ⓗⓔⓡⓔ ⓘⓢ ⓨⓞⓤⓡ
ⓐⓝⓢⓦⓔⓡ
===================================
solving by rationalising the denominator:-
=>
=> so,
@ Prabhudutt
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hii
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