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PLEASE HELP ME Solve the following quadratic equations.

1. 21-4x-x²= 0

2. 27+6s-x²= 0

3. 48-13x+x²= 0

4. 64x²-81= 0

5. 25a²-10a-1= 0

Please I need this tomorrow :(

2
by MadeleineJ09

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