Question

Descompune in factori:


VA ROG FRUMOS AJUTORR!

​

Answer 1

a)(x-2)²-9=(x-2+3)(x-2-3)=(x+1)(x-5)

b)(2x+1)²-(x+5)²=(2x+1+x+5)(2x+1-x-5)=(3x+6)(x-4)

c)49a²-(a-5)²=(7a+a-5)(7a-a+5)=(8a-5)(6a+5)

d)9(4x+1)²-(2x-3)²=(12x+3+2x-3)(12x+3-2x+3)=

14x(10x+6)=28(5x+3)

e)81-49a²x²=(9+7ax)(9-7ax)

f)x²+2√3x+3=(x+√3)²