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Naily [24]
3 years ago
8

which of the following expressions is equivalent to 3a-2ax4a+6a? (a) 4a^2+6a (b)3a-20a^2 (c) 9a-8a^2 (d) a^2

Mathematics
1 answer:
lianna [129]3 years ago
4 0

Answer:

\boxed{\sf (c) \ 9a - 8 {a}^{2}}

Step-by-step explanation:

\sf Simplify  \: the \:  following: \\  \sf \implies 3a - 2a \times 4a + 6a \\  \\  \sf  - 2a \times 4a =  - 2 {a}^{2} \times 4  :  \\  \sf  \implies  \boxed{ \sf - 2 {a}^{2}  \times 4} + 3a + 6a \\  \\  \sf  - 2 \times 4 =  - 8 :  \\  \sf \implies   \boxed{ \sf- 8} {a}^{2}  + 3a + 6a \\  \\  \sf 3a + 6a = 9a :  \\  \sf \implies 9a - 8 {a}^{2}

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3 years ago
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