15. Simplify the following expressions :
i) (✓3+✓7)²
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2 thoughts on “<br />15. Simplify the following expressions :<br />i) (✓3+✓7)²<br />​”

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)

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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

   Reply