Math, asked by himanshudusane08105, 9 months ago

if 2x+3y=8, xy=-2 then find 4x^2+9y^2

Answers

Answered by janvitha

2

Answer:

88

Step-by-step explanation:

2x+3y=8 (1)

xy=-2 (2)

by squaring on both sides of equation 1

(2x+3y)²=8²

4x²+9y²+12xy=64

(given that xy=-2)

4x²+9y²-12*2=64

4x²+9y²=64+24=88

Previous Question

Next Question

Similar questions

Math, 5 months ago

If equal side of an isosceles right triangle is 6 cm, then hypotenuse is. A.) 3cm B. 6 root 3 cm C. 6 root 2 cm D.) 12 cm...

Math, 5 months ago

Find the value of x if median of a 11 ,13 ,17 ,x, 23 ,31 and 39 is 20.

English, 5 months ago

MV SUCCE A goed school : The teachot ore pillars for school, they must be educated Hind, learned, disiplined and have lot of Patience. They must love their profession and children. Magnifient building, spacious, spacious class rooms and big fields are not as much important. The way of teaching should encourage The students creative thinking. The Students should have free ness to ask question.

Math, 9 months ago

the denominator of a fraction is 4 more than twice its numerator if 6 is subtracted from both the numerator and the denominator the denominator becomes 12 times the numerator find the fraction...

Chemistry, 9 months ago

What happens when dilute hydrochloric acid is added to iron fillings? Write the equation and balance it.

Science, 11 months ago

what is drug abuse and it's causes?

Sociology, 11 months ago

In the state of Punjab, district with highest sex ratio is: (a) Ferozepur (b) Bathinda (c) Ludhiana (d) Amritsar.

English, 11 months ago

Write a brief note on soil erosion and conservation of water based on your reading of water the elixir of life...