i need help with these questions please and can u explain how u got the answers to please??

I need to factor these quadraticexpressis but i dont know how. I need this answered asap please and please explain how u got it. . A.X^2-x-4 2 B .2x^2-30x+72 C.2x^3-22x^2+56x D.4x^5+2 8x^4-32x^3 E.2a^3+10a^2-28a
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1 Answer

x^2-x-4=0

me yuze Quadratik equashun

zeroes: 2.5615528 & -1.5615528

a=1, b=-1, c=-4

b^2-4ac=17, so sqrt(17)=4.123105626

-b/2a=0.5

root/2a=2.061552812808

tell teech tu giv a problem weer anser be sumthun simpel, like 2
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