Solve for x. -3/4 (x+2) =6

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Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

Yoku is putting on sunscreen. he uses 2\text{ ml}2 ml to cover 50\text{ cm}^250 cm 2 of his skin. he wants to know how many milliliters of sunscreen (c)(c) he needs to cover 325\text{ cm}^2325 cm 2 of his skin. how many milliliters of sunscreen does yoku need to cover 325 \text{ cm}^2325 cm 2 of his skin?