1. Rút gọn biểu thức A(x) = (x+2)(x+3)(x+5) - (x-1)(x+4)(x+7). Từ đó tìm tất cả các giá trị x sao cho A(x) = 0.
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Answer:
Step-by-step explanation:
we know that
The <u><em>Two-Tangent Theore</em></u>m states that if two tangent segments are drawn to one circle from the same external point, then they are congruent
so
Applying the Two-Tangent Theorem at each vertex of the triangle
The perimeter of the triangle is equal to