Question

√(x+5) + √(20-x)=7
Find 'x'​

Answer 1

Answer:

x=4 or x=11

Step-by-step explanation:

1. first bring a term to right side and square it

2. add the terms

3. move terms

4. subtract and collect like terms

5. divide both sides by 2

6. square both sides

7. mutiply parentheses by 49

8. move expression to the left

9. calculate and collect the terms

10. reorder the terms

11. change the signs

12. write as a difference

13. factor the expression

14. solve it with suitable cases

AND HERE'S THE ANSWER

X = 4 OR 11

Answer 2

Answer:

(x-5)(x-7)(x+4)(x+6)=504. or (x-5)(x+4)(x-7)(x+ 6)=504. or (x.x-5x+4x-20)(x.x-7x+6x-42)=504. or (x2-x-20)(x2-x-42)=504.