the height of a right triangle is 7 cm less than its base. If the hypotenuse is 13 cm, form the quadratic equation to find the base of the triangle
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x2+x2+49-14x=169
2x2-14x-120=0
2x2-24x+10x-120=0
2x(x-12)+10(x-12)
x=12
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