what is the value of (5a²-3b²) if a=7and b=5
Answers
Answered by
1
Answer:
170
Step-by-step explanation:
Acc. to question
a = 7 and b = 5
∴ 5*(7)² - 3*(5)²
⇒ 5*49 - 3*25
⇒ 245 - 75
⇒ 170
Answered by
0
Answer:
120
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5.7^2-3.5^2
5.49-3.25
245-125
120
Step-by-step explanation:
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