To make a square for x²+bx=c, add(

)²on both side
in this case, b is-3/4, half of b is -3/8, and (-3/8)² is 9/64, so you add 9/64 to both side.
Step-by-step explanation:
Work done = Force × displacement
= 350 × 40
=14000J
Answer:
x=11
Step-by-step explanation:
Notice that the first diagram is similar with the second diagram with ratio 1:2
Ex: Side length of JK is 6 and NP being 12, 6:12→1:2
You can conclude that x:22 needs to follow the ratio of 1:2
Thus, x=11