(7+√5) (4+√5) simplify
Answers
Answered by
1
Answer:
75−45+125
=75−45+55
=(7−4+5)5=85
Answered by
41
Answer:
= 5 + 11√5 + 28
Step-by-step explanation:
= (7 + √5)(4 + √5)
Or, we can write it as :-
= (√5 + 7)(√5 + 4)
Using the identity : (x + a)(x + b) = a^2 + (a + b)x + ab
= (√5)^2 + (7 + 4)(√5) + 7*4
= 5 + 11√5 + 28
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