a minus b is equal to 5 a square + b square is equal to 49 then a + b is equals to what
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Answer:
√73
Step-by-step explanation:
a-b=5
a²+b²=49
→(a-b)²+2ab=49
→5²+2ab=49
→2ab=24
→ab=12
→((a+b)÷2)² -((a-b)÷2)²=12
→((a+b)÷2)²-(5÷2)²=12
→((a+b)÷2)²=12+25/4=73/4
→(a+b)²=73
→(a+b)=√73
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