Question

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Answer 1

Answer:

E + F = 2c² + 5c + 4

Step-by-step explanation:

$E = 6c^2 - 2c - 1 \\\\F = -4c^2 + 7c +5\\\\E + F = (6c^2 - 2 c -1) + ( -4c^2 + 7c +5)$

         $=(6c^2 -4c^2) +(-2c + 7c) + (-1 + 5)$      $[\ arranging \ terms\ ]$

         $= 2c^2 + 5c + 4$

Answer 2

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Let's Solve it!

Given that:

$\quad\quad\quad\quad\tt{E = 6 {c}^{2} - 2c - 1}$

$\quad\quad\quad\quad\tt{ F = - 4 {c}^{2} + 7c + 5}$

Formula:

$\quad\quad\quad\quad\tt{E + F = ?}$

Solution:

$\quad\quad\quad\tt{(6 {c}^{2} - 2c - 1) + ( - 4 {c}^{2} + 7c + 5)}$

Step by step:

$\quad\quad\quad\quad\tt{ ⟶(6 {c}^{2} ) + ( - 4 {c}^{2}) = \boxed{ \pink{2 {c}^{2} }}}$

$\quad\quad\quad\quad\tt{ ⟶ ( - 2c) + ( 7c) = \boxed{ \pink{5c }}}$

$\quad\quad\quad\quad\tt{ ⟶ ( - 1) + ( 5) = \boxed{ \pink{4 }}}$

Now, it will look like this:

$\quad\quad\quad\quad\tt{E + F =2 {c}^{2} + 5c + 4 }$

So, E + F is equal to:

$\quad\quad\quad\quad\tt{\boxed{ \boxed{ \color{magenta}{ 2 {c}^{2} + 5c + 4 }}}}$

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✍︎ C.Rose❀