4/2+√3 + √7 rationalise plz help plz plz plz plz
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Step-by-step explanation:
Q. Rationalize denominator of 4 / ( √7 + √3 ).
= 4 / ( √7 + √3 )
By multiplying numerator and denominator by ( √7 - √3 ).
= 4 ( √7 - √3 ) ÷ ( √7 + √3 ) ( √7 - √3 )
= 4(√7 - √3 ) ÷ { (√7)² - (√3)² }
= 4 ( √7 - √3 ) ÷ ( 7 - 3 )
= 4 ( √7 - √3 ) ÷ 4
= 4 ( √7 - √3 ) × 1/4
= ( √7 - √3 )
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