Answer:
x = − 4 ± √ 10,
Step-by-step explanation:
2(x + 4)² = 20
=> 2(x + 4) (x + 4) = 20
=> 2x + 8 (x + 4) = 20
=> 2x² + 8x + 8x + 32 = 20
=> 2x² + 16x + 32 = 20
=> 2x² + 16x + 12 = 0
=> Now solve using the quadratic formula:
Radical form: − 4 ± √ 10,
Decimal form: -0.84, -7.16
Hope this helps!
<em><u>D.</u></em>
A polynomial is an expression that looks similar to this:
3x³+x-3
Let's solve for x ~
➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖
be the identity matrix. Then pick whatever matrix you like for 
.