Question

If x=2 and you= -2then find the value of 7x² -3xy+5y².
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Answer 1

$\huge\pink {\underline {\mathbb{\pink{SOLUTION→}}}}$

● Given value of x=2 and y= -2

→given equation :- 7x² -3xy+5y².

Now, put the values of x and y :-

$\bf \rightarrow 7( {2})^{2} - 3(2)( - 2) + 5 {( - 2)}^{2} \: \\ \\ \rightarrow \bf 7 \times 4 - 3( - 4) + 5(4) \\ \\ \rightarrow \bf \: 28 + 12 + 20 \\ \\ \rightarrow \bf \: 60$

→The value of 7x² -3xy+5y² is 60.

HOPE IT HELPS YOU DEAR... :)

Answer 2

refer to the attachment :-