Respuesta :

jjodlask

Step-by-step explanation:

3x^2+3xy+y^2

3x4^2=144

3×(4×5)= 60

5^2=25

144+60=204+25=229

brainliest if answer is correct

halfpintwalters

Answer:

229

Step-by-step explanation:

all you have to do is substitute...so the equation would be

3×4^2+3×4×5+5^2

3×4=12^2=144

3×4×5=60

5^2=25

so...144+60+25=229

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