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3 years ago

Whats the answer to this question and how did you do it?? thanks,,, (:

Mathematics

2 answers:

lutik1710 [3]3 years ago

7 0

$5x+3=3x+7\\
5x-3x=7-3\\
2x=4\\
x=2$

MrRa [10]3 years ago

5 0

5x+3=3x+7
<em></em>-3 = -3
2x+3=7
-3= -3
2x=4
x=2

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Answer:

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Step-by-step explanation:

Given

$(a^4 - 6a^2b^2+ b^4) - (-2a^4+5a^2b^2+ 3b^4)$

Solving (a): Simplify

$(a^4 - 6a^2b^2+ b^4) - (-2a^4+5a^2b^2+ 3b^4)$

Open brackets

$a^4 - 6a^2b^2+ b^4 +2a^4-5a^2b^2- 3b^4$

Collect Like Terms

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Simplify Like Terms

$3a^4 - 11a^2b^2 -2b^4$

Solving (b): Simplify when a = 2 and b = -1

$3a^4 - 11a^2b^2 -2b^4$

$3*(2)^4 - 11*(2^2)*(-1)^2 -2*(-1)^4$

$3 * 16 - 11 * 4 * 1 - 2 * 1$

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$3a^4 - 11a^2b^2 -2b^4= 2$

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