exam Maths Puzzle Numerical Ability

Please help me solve this equations:
(x-10)(x-2)=-20

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exam Other Question

The difference of two numbers is 77. The second is 7 less than 5 times the first. What are the two numbers?

Can some one please help out with this question?
v/r
Jess Directions: Set up and complete a proof of the statement.
If a triangle is isosceles, the triangle formed by its base and the angle bisectors of its base angles is also isosceles.