Question

представьте в виде многочлена:
a)(y-4)(y+5)
б)(x-3)(x²+2x-6)
в)(b-4)²
г)(6x-y)(6x+y)

Answer 1

a)(y-4)(y+5) = y² +5y -4y -20 = y² - y - 20;
б)(x-3)(x²+2x-6) = x³+2x²-6x-3x²-6x+18 = x³ - x² - 12x +18;
в)(b-4)² = (b-4)(b-4) = b²-4b-4b+16 = b² - 8b + 16;
г)(6x-y)(6x+y) = 36x²+6xy-6xy-y² = 36x² - y².