Question

x² - 1
f² - 16
x² - y²
f² - 16
h⁴ - g²
25 - 49y²
d² - 9
49² - b²

81 - 100n²
a² - 121
f²g⁴ - h6
100h² - 81
1 - 64a⁴b²
0.04m² - 0.09n⁴

4x2 - 1/9
9/16 a⁴ - 1/25b²

ayudenme con esos ejercicios, por favor. ​

Answer 1

x²-1²=(x-1)(x+1)

f²-16=f²-(4²) = (f-4)(f+4)

x²-y² = (x-y)(x+y)

h⁴-g²=(h²)² - g² = (h²-g)(h²+g)

25-49y² = 5² - 7²y² = 5² - (7y)² = (5-7y)(5+7y)

d²-9 = d²- 3² = (d-3)(d+3)

49²-b²= (49-b)(49+b)