Question

por favor ja tentei resolver essas questoes mais nao consigo alguem me ajuda
reduzir com polinomios

-xy².(2x+5x²y-8y³)

(x+5)²

(a-3)²

(3s+t),(3s-t)

Answer 1

-xy².(2x+5x²y-8y³) = -2x²y² - 5x³y³ + 8xy⁵

(x+5)² = x² + 10x + 25

(a - 3)² = a² - 6a + 9

(3s + t)(3s-t) = (3s)² - t² = 9s² - t²