If x = 2 and y= -2 then find the value of 7x² -3xy - 5y² plz tell me
Answers
Answered by
0
Answer:
20
Step-by-step explanation:
7x²-3xy-5y²
= 7× 2² - 3.2.-2 - 5.-2²
= 7×4- (-12) - 5×4
= 28+12-20
= 40-20
= 20
Similar questions