What is the right answer ?

Question

What is the right answer ?

1 Answer

Impact of this question

1624 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-03-03T14:37:17

$4 x^{2} - 7 x + 16$ $4x^2-7x+16$

Explanation:

Let's expand the quadratic.

${(x + 4)}^{2} + 3 x (x - 5) = x^{2} + 8 x + 16 + 3 x^{2} - 15 x$ $color(red)((x+4)^2)color(blue)(+3x(x-5))=color(red)(x^2+8x+16)color(blue)(+3x^2-15x)$

Add like terms

$x^{2} + 8 x + 16 + 3 x^{2} - 15 x = 4 x^{2} - 7 x + 16$ $color(green)(x^2)+color(purple)(8x)+16+color(green)(3x^2)color(purple)(-15x)=color(green)(4x^2)color(purple)(-7x)+16$

$= E$ $=E$

Science

Math

Humanities

... and beyond

What is the right answer ?

1 Answer

Explanation:

Related questions

Impact of this question