15. Simplify the following expressions :
i) (✓3+✓7)²
Answers
Answered by
1
Step-by-step explanation:
(√3+√7)²
=(√3)²+(√7)²+2*√3*√7
=3+7+2√21
= 10+2√21
=2(5+√21)
Answered by
2
Step-by-step explanation:
=> Use formula (a+b)²=a²+2ab+b²
=(✓3+✓7)²
=(√3)²+2×√3×√7+(√7)²
=3+7+2√21
=10+2√21
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