Cara hitung cepat 36x34= Menggunakan cara 1+

Ingat :
a² - b² = (a + b)(a - b)


36 × 34
= (35 + 1)(35 - 1)
= 35² - 1
= 1225 - 1
= 1224

•••
(x5)² = x(x + 1)_25

35² = 3(3+1)_25 = 3.4_25 = 1225