Answer:
⇒ The given quadratic equation is x2−kx+9=0, comparing it with ax2+bx+c=0
∴ We get, a=1b=−k,c=9
⇒ It is given that roots are real and distinct.
∴ b2−4ac>0
⇒ (−k)2−4(1)(9)>0
⇒ k2−36>0
⇒ k2>36
⇒ k>6 or k<−6
∴ We can see values of k given in question are correct.
Step-by-step explanation:
16x^2 - 4
4(4x²-1)
4((2x)²-1²)
4(2x+1)(2x-1)
Answer:
Step-by-step explanation:
1.) It's a parallelogram
area:
3.5 x 5.8 = 20.3
perimeter:
4 + 4 + 5.8+5.8 = 19.6
2.)It's a right triangle
<span> area:
</span> (6.92 x 11) ÷ 2 = 38.06
<span> perimeter:
</span> 6.92 + 11 + 13 = 30.96
3.) ...that looks like a square tbh xD
<span>area:
</span>4.4 x 3 = 13.2
<span>perimeter:
</span>2.4
4.) Trapezoid
