(4.3*10)-3=40
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1.7442
900 has 2 square roots, one positive and one negative (but equal if we ignore the + and - signs). Now, since 900 = 9 x 100 = 3 x 3 x 10 x 10 the square roots of 900 are +(3 x 10) and -(3 x 10) That gives us +30 and - 30
10 x 43 = 430
XLIII is 43. 10 less than 50 plus 3. the answer is 43 XLIII would be 43. L = 50 X = 10 I = 1 Placing the X before the L makes 40, as we have subtraced 10 by possitioning it there.
2.30 x 10-3 2.30 x 10 to the negative third