Answer:
-1960
Step-by-step explanation:
The expression on the left expands to ...
(4x -7)² = (4x)² +2(4x)(-7) +(-7)² = 16x² -56x +49
Matching coefficients, you have ...
Then the expression c(b+a) evaluates to ...
49(-56+16) = 49(-40) = -1960
3/5
It should look like this...
x=3/5
(5*(3/5))=3
5*3 = 15
15/5=3
252m^3
Multiply all the numbers.
The tree when he got it was half the size it is now. If the tree is 9 feet tall, back then it was half of 9 feet, which is 4.5 feet.
