Question

Q.5If * is an operation such that for integers a and b we havea * b = a × b + ( a × a + b × b) then find ( – 3) * (– 5)​

Answer 1

Answer:

49

Step-by-step explanation:

15+(9+25)

15+34

49

Answer 2

Answer:

Given, a  

∗

b=a×b+(a×a+b×b)

So.

(i)

we put a=(−3) and b=(−5)

(−3)∗(−5)=(−3)×(−5)+[(−3)×(−3)+(−5)×(−5)]

=15+(9+25)=15+34=49

(ii)

Similarly, a=−6,b=2

(−6)∗2=(−6)×2+[(−6)×(−6)+2×2]

=−12+(36+4)

=−12+40=28

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