Answer:
= −21x−7
Step-by-step explanation:
−7(1+3x)
=(−7)(1+3x)
=(−7)(1)+(−7)(3x)
=−7−21x
= −21x−7
A•B=C
A•B=-21
Find factors of 21 ( it doesn't matter that it's negative ) that at up to be 4
It's 7and 3
Then put x^2+7x+3x-21 and then factor by grouping
Do the same steps for #2
Yes because 2.799 has a extra digit but if there is an answer that they can be the same then they are the same
Answer:
Step-by-step explanation:
Supplement angle is 57degree 15'
The fourth one should be the correct answer
