For this case we have the following expression: 6b - 8ab + 15 - 20a We can rewrite the expression factoring. We have then: (4a-3) * (- 2b-5) Checking we have: -8ab-20a + 6b + 15 The resulting expression is the same. Answer: (4a-3) * (- 2b-5)
Two triangles are similar if and only if the corresponding sides are in proportion and the corresponding angles are congruent. To show two triangles are similar, it is sufficient to show that two angles of one triangle are congruent (equal) to two angles of the other triangle.
