7x^2-9=-12
And
8x^2+7=3
Please i need help its quadratic equations using square roots

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step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540

step-by-step explanation: