Question

1.Uzupełnij:

a)(2x+3y)(.............)=10xz+4xt+15yz+6yt

b)(x-t)(..........)=xy+xz-ty-tz

c)(3a-b)(.........)=18a-4,5ac-6b+1,5bc

2.Uzupełnij:

a)(2x-5)(y+6)-.................=12x-5y

b)(7-x)(3-y)-..............=-3x-7y

c)(6x-1)(4-y)=y-4+.................

to ćw. 3 i 4 str. 22 z ćwiczeń Matematyka z plusem kl.2

Answer 1

a)(2x+3y)(5z+2t )=10xz+4xt+15yz+6yt

b)(x-t)(y+z)=xy+xz-ty-tz

c)(3a-b)(6 - 1,5 c)=18a-4,5ac-6b+1,5bc

 

a)(2x-5)(y+6)-2xy+30=12x-5y

b)(7-x)(3-y)-21-xy=-3x-7y

c)(6x-1)(4-y)=y-4+24x-6xy