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Solve this math problem pls?

Prove that 3(x+1)(x+7)-(2x+5)^2 is never positive?

I ve been trying to figure this question for 30 min, still don t get it.?

convert 200degrees celcius to Farenheit?

Simplify sin(x/2)-cos(x/2)=1?

the question is share 171 in the ratio 3:7:9?

solve the following: 27a-9b+3c-8=0 8a-4b+2c-8=0 -a-b-c-8=0 Find a,b,c?

absolute value of ((1+2i)/(1-2i))^2 ?? please..?

4/5 * 1 1/6=?

Find S8 for the geometric series 3 + -6 + 12 + -24 +…?

2x(4x+5)=-3?

The LCM of three numbers is 7920 and their GCD is 12. Two of the numbers are 48 and 264. find the third number if one of its factors is 9.?

three times some number equals seventy-eight more than the number itself?

2. If x−5=16, what is x?

Math question?

If sin(a) = 3/5, find the value of cos(a) and sin2a?

Factorise this: 25x^2 + 16y^2?

A certain factory employs 60 workers . if 4 out of every 5 workers are married, how many married workers are employed by the factory?

what is 5 liters in kilograms?

Algebra 2 questions/ Combine functions?

Math Question?

ALGEBRA QUESTION?

In a group of 32 men and women, there are 6 more women than men. How many people of each gender are there?

Can someone explain how 2(5)^14 ≈ 1.22(10^10) ?

5/7(b-35) equals?

8 8 8= 6 use any mathematical sign to get this answer?

Solve for b if [b/(4+i√3)] - [b/(4-i√3)] = 1.?

Math help?

What is the answer to this Maths q.?

How do you do maths questions like this?

50.23 miles to centimeters?

5.905 times 100.04 is closest to what?

Sum of three number a.p. is 15 if 1,4,19,... Are added respectively their form g.p. find the number.?

MATH HELP PLZ?!? One Question!?

What’s the distance between-10.5 and 7 on a number line?

Solve the equation by factoring 2x^2+13x+15=0?

How do I solve this? (8/125)^(-2/3)?

Can you help me with this math problem?

the ratio between two quantities is 3:4 if the first is rupees 810 find the second?

Express this trigonometric identity in simplest form?

Do these points intersect? 5x + 6y = -5.5 & 6x + 1.5y = -8.5. My answer is yes and point of intersection is -1.5, 0.33. Is it correct?

An equilateral triangle has sides that are 10 feet long. What is the height of this triangle?

Sam's age is now 3 times Ben's age. 6yrs later, Sam's age is will be less than 3 times that of Ben's age by 12. Find Ben's present age.?

what percent is 500 million to 7 billion?

how many times does 0.95 fit into 380?

How do I factor x^3-9x-440=0?

Need help?

((1/(15^(15/16))+15^(1/16)?

Can you solve these math problems?

expand and simplify: 6(2x-3)-2(2x+1) 2(5x+3)-2(2x-3)?