simplify and indicate if they are rational or irrational
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Answer:
(a) Irrational
(b) Irrational
Step-by-step explanation:
(a) (√3+√7)(√3+√7)
= √9+√21+√21+√49
= 3+2√21+7
= 7+3+2√21
10+2√21; Irrational
(b) (2√5+3√2) (2√5+3√2)
= [4×√25]+[6√10]+[6√10]+[9×√4]
= 4×5+12√10+9×2
= 20+12√10+18
= 20+18+12√10
= 38+12√10; Irrational
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