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Mathematics
Punk
9 January, 07:01
Complete the square 2x^2-3x-5=0
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Ivan Velazquez
9 January, 09:36
0
2 (x-3/4) ^2 - 49/8 = 0
Step-by-step explanation:
2x^2 - 3x - 5 = 0
First take out the 2: 2 [x^2 - 3/2x - 5/2] = 0
Now complete the square inside the square brackets: 2 [ (x-3/4) ^2 - 9/16 - 5/2] = 0
Simplify inside the square brackets: 2 [ (x-3/4) ^2 - 49/16] = 0
Now times out the square brackets: 2 (x-3/4) ^2 - 49/8 = 0
And we're done!
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