<img src="https://sb.scorecardresearch.com/p?c1=2&amp;c2=22489583&amp;cv=3.6.0&amp;cj=1">

I keep getting the wrong answers >:'D (F.O.I.L.)

Author's Avatar
8
3

Question A

(3x+5z)(7x-2z)

Question B

(5y-4z)(6y-7z)

Question C

(3y+2)(5y-8)

Question D

(5c-4d)(c+8d)

I have a couple more but I don't want to overwhelm anyone. I just can't get these right.

Likes (8)
Comments (3)

Likes (8)

Like 8

Comments (3)

The answers and steps

[3x+5z][7x-2z]

[3x•7x]-[3x•2z]+[5z•7x]-[5z•2z]

That can be made into 21x^2-6xz+35xz-10z^2

Which can be further simplified to

21x^2+33xz-10z^2

[5y-4z][6y-7z]

[5y•6y]-[5y•7z]-[4z•6y]+[4z•7z]

This turns to

30y^2-35yz-24yz+28z^2

This is simplified to

30y^2-59yz+28z^2

Read more
1 Reply 04/15/20

Could you maybe send a picture of what you did so that we can point out the wrong step(s)

Read more
0 Reply 04/14/20
    Community background image
    community logo

    Into Maths Amino? the community.

    Get Amino

    Into Maths Amino? the community.

    Get App