Question

What is the product of x (4x + 6) = 28?

Answer 1

Answer:

Explanation:

x(4x+6)=28

We move all terms to the left:

x(4x+6)-(28)=0

We multiply parentheses

4x^2+6x-28=0

a = 4; b = 6; c = -28;

Δ = b2-4ac

Δ = 62-4·4·(-28)

Δ = 484

The delta value is higher than zero, so the equation has two solutions

We use following formulas to calculate our solutions:

x1=−b−Δ√2ax2=−b+Δ√2a

Δ−−√=484−−−√=22

x1=−b−Δ√2a=−(6)−222∗4=−288=−3+1/2

x2=−b+Δ√2a=−(6)+222∗4=168=2

Answer 2

❤️Answer❤️

4×2 + 6x = 28

4×2 + 6x - 28 = 0

a.4 b.6 c.-28

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