Answer:
4ab
Step-by-step explanation:
4(-3b)(+a)+8ab÷2a×4a
4(-3ab)+8ab÷2a×4a
-12ab+8ab÷2a×4a
-12ab+4b×4a
-12ab+16ab
16ab-12ab = <u>4ab</u>
20 weeks
300/15 =20
In Corner left down
4^10 ÷ 4^5 = 4^5
it's like: 10 - 5 = 5 ( I talk about the powers)
16
a^2+b^2=c^2
a^2+12^2=20^2
144+a^2=400
a^2=256
a=16
