
The answer=>
For this,we need to know what's Middle splitting method
- In order to factorize x² + bx + c we have to find numbers p and q such that p + q = b and pq = c. After finding p and q, we split the middle term in the quadratic as <em><u>px + qx and</u></em> get desired factors by grouping the terms.
Step-by-step explanation:

i.e
Alpha= Beta = 4
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Answer:
Sara is now 4, will be 8 in 4 years. Ralph is now 12, will be 16 in 4 years.