Base of triangle is 4x units and height is 6y units. Find area of triangle
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Given base and altitude of triangle are (3x−4y) and (6x+5y)
We need to find area.
Therefore, area of triangle =21×base×altitude
=21×(3x−4y)×(6x+5y)
=23x(6x+5y)−4y(6x+5y)
=218x2+15xy−24xy−20y2
=21(18x2−9xy−20y2)
=(9x2−4.5xy−10y2)
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