(1) 1.375 (2) -1.5
Step-by-step explanation:
Answer:
x=√65 and x=-√65
Step-by-step explanation:
Givn the expression 2x^2 - 9 = 121
Add 9 to both sides
2x^2 - 9 + 9 = 121 + 9
2x^2 = 130
Divide both sides b 2
2x^2/2 = 130/2
x^2 = 65
x = ±√65
x=√65 and x=-√65
The correct option is: 20
<u><em>Explanation</em></u>
The expression
can be rewritten as
That means: 
Now simplifying the left side, we will get....

Now <u>comparing the co-effcients of like terms in left and right side</u>, we will get.....

Thus, the value of 't' will be 20.