Answer:
1.) 15a2+2ab−8b2
2.) 9x3−18x2+11x−2
3)2x3−5x2y+5xy2−3y3
4.) 2x4+3x3−7x2−5x+6
Step-by-step explanation:
1.)=(3a+−2b)(5a+4b)
= (3a)(5a)+(3a)(4b)+(−2b)(5a)+(−2b)(4b)
= 15a2+12ab−10ab−8b2
2.) =(3x2+−5x+2)(3x+−1)
=(3x2)(3x)+(3x2)(−1)+(−5x)(3x)+(−5x)(−1)+(2)(3x)+(2)(−1)
=9x3−3x2−15x2+5x+6x−2
3.)=(2x+−3y)(x2+−xy+y2)
=(2x)(x2)+(2x)(−xy)+(2x)(y2)+(−3y)(x2)+(−3y)(−xy)+(−3y)(y2)
=2x3−2x2y+2xy2−3x2y+3xy2−3y3
di ko na magagawa ung 4 may gagawin pa ako haha eto na ung sagot
