Question

Vă roog ajutați ma ofer coronita+like

Answer 1

a)(5x-6)(5x+6)
b)(2x-7)(2x+7)
c)(5-8x)(5+8x)
d)(7-9x)(7+9x)
e)(7x-13)(7x+13)
f)(6x-9)(6x+9)
g)(x√3-1)(x√3+1)
h)(x√2-√7)(x√2+√7)
i)(x√5-√3)(x√5+√3)

Answer 2

a²-b²=(a-b)(a+b)

25x²-36=(5x)²+6²=(5x-6)(5x+6)
4x²-49=(2x)²-7²=(2x-7)(2x+7)
25-64x²=5²-(8x)²=(5-8x)(5+8x)
49-81x²=7²-(9x)²=(7-9x)(7+9x)
49x²-169=(7x)²-13²=(7x-13)(7x+13)
36x²-81y²=(6x)²-(9y)²=(6x-9y)(6x+9y)
3x²-1=(√3x)²-1²=(√3x-1)(√3x+1)
2x²-7=(√2x)²-(√7)²=(√2x-√7)(√2x+√7)
5x²-3=(√5x)²-(√3)²=(√5x-√3)(√5x+√3)