exam Maths Puzzle Numerical Ability

What is the distributive property to write an equivalent variable expression.

( 5 - a )( -7 )

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exam Other Question

When simplifying a radical, is it necessary to take the absolute value of a result to indicate the pricipal root? determine the point A(x,y) so that the points A(x,y), B(0,3), C(1,0), D(7,2) will be the vertices of a parllelogram?