Determining factoring polynomials

Reference no: EM13120436

Please help solve these problems:

1. If the sides of a square are lengthened bt 5cm, the area becomes 169cm2. Find the length of a side of the original square.

2. 4b2 + 49 - 28b =

3. 28b2 + 196 bt + 343t2 (factor completely)

4. Solve 25x4 - 25x2 + 6 = 0

5. Solve x2 + 6x - 4 = 0

Reference no: EM13120436

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