Question

I need some urgent help

the thing is to factor the expressions trinomial way
if you want extra points you could help me with my past 2 questions they are 50 each someone gave me a wrong answer so i would really appreciate some help with that too but that's optional

Answer 1

#1

• 15x²+4x-4
• 15x²+10x-6x-4
• 5x(3x+2)-2(3x+2)
• (5x-2)(3x+2)

#2

• 16a²-50a+36
• 2(8a²-25a+18)
• 2(8a-9)(a-2)

#3

• 63n²+126n+48
• 3(21n²+42n+16)

Not more factorable