Question

7+3*under root 5/3+under root 5 -7-3under root 5/3-under root 5
Please let the answer plz plz plz

Answer 1

Hi ,

(7+3√5)/(3+√5)-[(7-3√5)/(3-√5)]

=[(7+3√5)(3-√5)-(7-3√5)(3+√5)]/[(3+√5)(3-√5)]

=[21-7√5+9√5-15-(21+7√5-9√5-15)]/[3²-(√5)²]

=[6+2√5-(6-2√5)]/(9-5)

= (6 + 2√5 - 6 + 2√5 )/4

= 4√5/4

= √5

I hope this helps you.

: )