a) b²- 36 = (b-6)(b+6)
b) 49-y² = (7-y)(7+y)
c) 4x²-25y² = (2x - 5y)(2x + 5y)
d) m²-16n² = (m - 4n)(m+4n)
e)a²b²-2 = (ab - √2)(ab + √2)
f) 9-x⁴v² = (3-x²v)(3+x²v)
g) (4ab)²-0,01x⁶ = (4ab - 0,1x³)(4ab + 0,1x³)
h) x⁴-16 = (x² - 4)(x²+4)=(x-2)(x+2)(x²+4)
i) 3-z²y⁶ = (√3 - zy³)(√3 + zy³)
