Evaluate the following by factorising: (7.5)²-(4.8)²
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Answered by
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Answer:
33.21
Step-by-step explanation:
by using a^2 - b^2 = (a + b ) ( a - b )
( 7.5 + 4.8 ) ( 7.5 - 4.8 )
( 12.3 ) ( 2.7 )
33.21
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