Question

simply (2x +y)(7x2+25) +15(x2+7y2+12)​

Answer 1

Step-by-step explanation:

$(2x + y)(7x {}^{2} + 25) + 15(x {}^{2} + 7y {}^{2} + 12) \\ = 14x {}^{2} + 50x + 7x {}^{2} y + 25y + 15x {}^{2} + 105y {}^{2} + 180 \\ = 19x {}^{2} + 50x + 7x {}^{2} y + 25y + 105y {}^{2} + 180$