Answer:
3x^2+14x-5
Step-by-step explanation:
Use the foil method. Multiply 3x by (x+5) first, then multiply -1(x+5). This produces 3x^2+15x-x-5, reduce to get 3x^2+14x-5.
£165
12x²-8x-15 should be your answer
I've shown the process in the picture .
hope u understand
Answer: 1. a^2 + 4a + 4
2. b^2 + 14b + 14
3. c^2 -6c + 9
∠ABC = 50°
Since this is a parallelogram, opposite angles are congruent.
Therefore, ∠D ≅ ∠B
∠D = 38° + 12°
∠B = 38° + 12°
∠B = 50°
