Question

Найдите значения выражения 36ab-(3a+6b) в квадрате

Answer 1

36ав-9а²-36ав-36в²=-9(а²+4в²)

Answer 2

$36ab-(3a+6b) ^{2} =36ab-(9a ^{2} +36b ^{2} +36ab=\=36ab-9a ^{2} -36b ^{2} -36ab=-9(a ^{2} +4b ^{2} )$