Paano mo paramihin (x + 5) (x - 4)?

Sagot:

# x ^ 2 + x - 20 #

Upang multiply ang dalawang polynomials, dapat mong gamitin ang FOIL (unang labas sa loob huling) paraan.

# (x + 5) (x-4) = underbrace (x * x) _ (kulay (asul) ("una")) + underbrace (x * (-4) (5 * x) _ (kulay (asul) ("sa loob")) + underbrace (5 * (-4)) _

# (x + 5) (x-4) = x ^ 2 - 4x + 5x - 20 #

Pasimplehin ang huling equation upang makuha ang sagot:

# x ^ 2 + x - 20 #

768x ^ 14y ^ 2 -3 (2x) ^ 4 (4x ^ 5y) ^ 2 -3 * 16x ^ 4 * 16x ^ 10y ^ 2 -3 * 16 * 16 * x ^ 4 * x ^ 10 * y ^ 2 768x ^ 14y ^ 2

(7z + 8x) (7z-8x) 7z * 7z-7z * 8x + 8x * 7z-8x * 8x 49z ^ 2-56zx + 56xz-64x ^ 2 49z ^ 2-64x ^ 2

35x ^ 4y-21x ^ 3y ^ 2 + 7x ^ 2y ^ 2 7x ^ 2y (5x ^ 2-3xy + y) 35x ^ 4y-21x ^ 3y ^ 2 + 7x ^ 2y ^ 2