Factor Quadratic

Question

x^2-11x+28

 

X^2-34x+64

 

15x^2+43x+30

 

16x^2-1

 

-216x^3+1

 

Please help I am so confused

Answer 1

Here are some hints:

4*7=28 and 4+7=11

 

32*2=64 and 32+2=34

 

15=3*5, 30=5*6, 5*5+3*6=25+18=43

 

difference of 2 squares becomes (a-b)(a+b)

 

difference of 2 cubes becomes (a-b)(a²+ab+b²)   (-216)=(-6)³