4√28 - 15√63 - 20√49
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Answer:
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Answered by
1
Answer:
-37√7-140
Explanation:
4√28= 4√4×7 = 4×2√7 = 8√7
-15√63= -15√9×7 = -15×3√7 = -45√7
-20√49 = -20×7 = -140
= 8√7-45√7-140
= √7(8-45)-140
= -37√7-140
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