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Simplify. \newline245\sqrt{245}

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Q. Simplify. \newline245\sqrt{245}
  1. Find Prime Factors: 245\sqrt{245}\newlineLet's find the prime factors of the radicand (the number inside the square root).\newlinePrime factorization of a number is expressing it as the product of its prime factors.\newline245=5×7×7\sqrt{245} = \sqrt{5 \times 7 \times 7}
  2. Group and Combine Factors: 5×7×7\sqrt{5 \times 7 \times 7}\newlineNow, group the identical factors.\newlineCombine the identical factors by using the exponents.\newline5×72\sqrt{5 \times 7^2}
  3. Apply Product Property: 5×72\sqrt{5 \times 7^2}\newlineApply the product property of radicals:\newlinea×b=a×b\sqrt{a \times b} = \sqrt{a} \times \sqrt{b}\newline5×72=5×72\sqrt{5 \times 7^2} = \sqrt{5} \times \sqrt{7^2}
  4. Simplify Perfect Square: 245=5×72\sqrt{245} = \sqrt{5} \times \sqrt{7^2}\newlineSimplify the square root of the perfect square.\newlineSquare and square root cancel each other out.\newline5×72=5×7\sqrt{5} \times \sqrt{7^2} = \sqrt{5} \times 7
  5. Final Simplification: 245=5×7\sqrt{245} = \sqrt{5} \times 7\newlineThe simplest form of 245\sqrt{245} is:\newline7×57 \times \sqrt{5}\newline=75= 7\sqrt{5}

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