7-3=4
9-2=7
4x7=28
Use PEMDAS for order of operations, it will save your life
Parenthesis Exponents Multiply Divide Add Subtract
Multiply and Divide and Add and Subtract can be switched around with each other, but multiply and divide always happens before add and subtract. The reason you add first here is because it is in the parenthesis.
Answer:
−x^2−11
Step-by-step explanation:
Distribute the Negative Sign:
=−3x−4+−1(x^2−3x+7)
=−3x+−4+−1x^2+−1(−3x)+(−1)(7)
=−3x+−4+−x^2+3x+−7
Combine Like Terms:
=−3x+−4+−x^2+3x+−7
=(−x^2)+(−3x+3x)+(−4+−7)
=−x^2+−11
Answer:
x= +- 4/3
Step-by-step explanation:
(3x+4)(3x-4)=0
make each equation set to 0 and solve
3x+4=0
subtract 4 from both sides
3x=-4
divide both sides by 3
x=-4/3
3x-4=0
add 4 to both sides
3x=4
divide both sides by 3
x=4/3
