Answer:
-a^2 -a -35
Step-by-step explanation:
a(4-a) -5(a+7)
Distribute
4a -a^2 -5a-35
Combine like terms
-a^2+4a -5a-35
-a^2 -a -35
<span>Neon is heavier than helium and does not react with other elements. This is because Neon is a noble gas and is very stable because its outer electrons are filled.</span>
Answer:
Step-by-step explanation:
4x5 1/8
= 4 × 41/8
= 41/2
= 20 1/2
Answer:
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Step-by-step explanation:
